Oklo

Provide technical leadership and develop cross-cutting programs and infrastructure to enable organizational effectiveness in nuclear engineering. | Bachelor's degree in Nuclear Engineering or related field with 10+ years of nuclear engineering experience and strong communication and coordination skills. | Thanks for your interest in Oklo! We are searching for a Senior Technical Advisor to join our engineering team. Position Description The Senior Technical Advisor serves as the technical deputy to the Group Director, operating as a senior individual contributor with broad technical authority and organizational reach across the group. This role is responsible for enabling the effectiveness, consistency, and scalability of the group’s technical work by developing cross-cutting programs, infrastructure, and guidance that impact the entire organization. The ideal candidate is a technically broad nuclear generalist with strong interpersonal skills who is comfortable diving deeply into unfamiliar topics, synthesizing across disciplines, and coordinating with diverse stakeholders to turn high-level intent into durable, functioning programs. This position reports directly to the Group Director and does not have direct people-management responsibility, but exerts influence through technical leadership, trust, and execution. Specific responsibilities may include: Traveling to headquarters (Santa Clara, CA) 2x per calendar quarter for team meetings, company offsite, or other business gatherings. Technical Leadership and Decision Enablement Act as a trusted technical advisor and deputy to the Group Director on matters spanning nuclear engineering, analysis quality, and technical program execution. Provide independent technical judgment on cross-group issues, trade studies, and programmatic decisions. Represent the Group Director in technical forums, reviews, or coordination meetings as delegated. Group-Wide Technical Programs Design, draft, and maintain group-level technical work instructions, procedures, and best-practice guidance. Lead the development and rollout of shared technical infrastructure needed for new or evolving programs (e.g., documentation systems, analysis workflows, review processes). Identify gaps or friction points in how work is executed across teams and proactively develop solutions. Technical Integration & Coordination Coordinate across multiple teams and disciplines to establish new programs, ensuring alignment with regulatory expectations, internal standards, and practical execution realities. Translate high-level organizational goals into concrete technical processes that teams can realistically adopt and sustain. Facilitate alignment between analysts, designers, software developers, QA, and management. Deep Dives & Problem Solving Perform targeted deep dives into specific technical topics as needed to unblock programs, resolve ambiguities, or inform decision-making. Rapidly develop working knowledge in unfamiliar technical areas and synthesize expert input into actionable guidance. Support root-cause analysis and corrective actions for cross-cutting technical or process issues. Quality, Consistency, and Scalability Promote consistency in technical rigor, documentation quality, and analysis practices across the group. Help ensure that technical outputs are defensible, reviewable, and scalable as the organization grows. Balance technical fidelity, schedule, and resource constraints in proposed solutions. Experience Level: Experienced (10+yr) Minimum Qualifications: Bachelor’s degree in Nuclear Engineering or a closely related technical field (e.g., Mechanical Engineering, Materials Science). Significant experience (i.e., 10+ years) across a breadth of nuclear engineering technical domains (e.g., reactor physics, thermal-hydraulics, fuel cycle, safety analysis, licensing support, systems engineering). Demonstrated ability to operate as a technical generalist while engaging deeply with specialists. Strong written and verbal communication skills, including the ability to draft clear, practical technical guidance. Proven experience coordinating work across multiple teams or disciplines. High degree of technical judgment and professionalism. Bonus Qualifications: Advanced degree in Nuclear Engineering or a closely related technical field (e.g., Mechanical Engineering, Materials Science) Licensed Professional Engineer in a related field Experience with analysis methods verification and validation Competencies We are looking for a Senior Technical Advisor that is: Personable, approachable, and trusted by both senior leadership and individual contributors. Comfortable operating in ambiguity and building structure where none exists. Self-directed, with a strong bias toward execution and follow-through. Pragmatic mindset: understands how to balance ideal technical solutions with real-world constraints. Experience working in regulated or safety-critical technical environments (strongly preferred). Passionate about clean energy An optimist at heart Passionate about making advanced fission a reality Willing and able to learn quickly Willing to think differently and do things in new ways Comfortable in a fast-paced, highly iterative startup environment Excited to think creatively, critically, and reflectively about the problems they are solving while not leaning only on what has been done before Willing to propose novel and creative solutions to technical problems An excellent writer who can write in a modern active voice, so make your cover letter compelling and write it well! Able to communicate technical content and results verbally Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo travel requirements: Oklo requires remote employees to travel to headquarters (Santa Clara, CA) twice a quarter annually, based on business or team needs, including attendance at team meetings, off-sites, and other company events or gatherings. About Oklo compensation: $140,000 - $190,000 Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories. #CHOP: Oklo’s Values Collaboration: We go further, together. We bring diverse perspectives, listen actively, and build trust through transparency and respect. We work across disciplines, sharing ownership to turn complex challenges into shared successes. Humility: We are team players who act for the good of the company and for the world. We are focused on our mission, not personal recognition. Ownership: We take pride in what we do and how we do it. We are proactive in finding solutions and see tasks through to completion. We are committed to delivering on our promises to provide clean, reliable, and affordable energy. Pathfinding: We chart new ground where no path exists by approaching challenges with curiosity, courage, and creativity while navigating ambiguity. Recruitment Fraud Disclaimer Oklo is aware of recent recruitment fraud attempts targeting job seekers. Please be cautious of anyone claiming to represent Oklo who does not contact you from an official Oklo email address. All legitimate communications from our recruiting team— including application updates, interview requests, and job offers — will come exclusively from an @oklo.com email. Oklo will never ask for sensitive personal information, payments, or account credentials during the hiring process. If you receive suspicious outreach or have concerns about the authenticity of any communication claiming to be from Oklo, please contact us through the official channels listed on our website.

Provide comprehensive administrative support to executive leadership, manage schedules, coordinate meetings, and handle confidential information. | Requires proven experience as an executive assistant, strong technical proficiency with office software, excellent communication skills, and ability to multitask in a fast-paced environment. | Thanks for your interest in Oklo! We are searching for an Executive Assistant to Oklo's Chief Financial Officer to join our team. Position Description Oklo is seeking an experienced, dynamic, technically capable Executive Assistant to support our Chief Financial Officer. This role demands a combination of administrative prowess, flawless execution of tasks, a team player and the agility to navigate a fast-moving company in an exciting industries of advanced fission (nuclear energy) and radio isotope production. The position will also provide support to the Finance team overall and other critical roles like Head of Legal. Specific responsibilities may include: • Provide comprehensive support to the CFO, including calendar management, coordinating meetings, and handling travel arrangements. • Serve as a liaison between CFO and other internal departments as well as external stakeholders. • Efficiently process and distill a high volume of incoming information, presenting it in a prioritized manner to CFO, and facilitating subsequent actions. • Prepare and edit presentations, reports, and other critical financial related documents, ensuring accuracy and timely delivery. • Manage confidential information with discretion, upholding the company's data protection standards. • Proactively address and resolve administrative and technical challenges. • Assist with project coordination, ensuring milestones are met and updates are communicated effectively. • Handle ad-hoc tasks and projects as required, showcasing resourcefulness and adaptability. • Schedule events with key stakeholders efficiently and smoothly. • Work in close collaboration with other Executive Assistants in the company. • Manage and coordinate logistics for investor relations activities, including conference attendance, headquarters visits, and investor meetings. • Own and maintain operational trackers and spreadsheets supporting hiring, project status, investor engagement, and accounting/finance activities. • Prepare briefing materials and meeting support for the CFO in advance of critical internal and external engagements. Minimum Qualifications: • Bachelor's degree or equivalent experience. • Proven experience as an executive assistant or in a similar role, with a preference for those familiar within technical environments. • Strong technical proficiency with the ability to quickly adapt to new tools and software including Google Suite, Slack, Box, Atlassian, Asana, Microsoft Office, Greenhouse, Ramp, and Navan. • Exceptional organizational skills and attention to detail. • Excellent communication skills, both verbal and written. • Demonstrate strong administrative capabilities, with document tracking discipline. • Remain calm under pressure and effective in high-visibility, high-impact situations. • Basic knowledge of finance and capital markets is a plus, but not required. • Ability to work in a fast-paced environment, multitask, and prioritize tasks. • A proactive, entrepreneurial mindset, with the ability to anticipate needs and challenges. • Knowledge of the nuclear power industry is a plus, but not required. • In your cover letter, please include, describe and link to any creative work you are particularly proud of whether that be an event you planned, artwork, article/blog post, a website you designed, or even a social media account. Competencies • You are passionate about clean energy and making advanced fission a reality • You have a go get-it attitude • You love doing all kinds of things and working in a place where no day is the same • You're savvy with technology and like learning new software • You have worked a good amount with Microsoft Office Suite and Adobe Acrobat - you know how to do tracked changes and add redlining or comments to documents, you know how to create PDFs, or at least you are a quick learner or know how to figure it out! • You exhibit strong stakeholder management skills, with a high degree of professionalism and diplomacy. • You have excellent grammar and spelling! • You can handle having a lot of different tasks at a time and know how to prioritize and multitask • Excellent written and verbal communication skills in English, although other language skills are awesome too • Strong attention to detail • You enjoy organizing • You are a relatively early riser and don't mind helping out in the early morning east coast time • You are comfortable with flexible hours and working remotely Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won't enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn't about a fake or arbitrary "pieces of flair" mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren't about taking credit for ourselves, and we aren't about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo travel requirements: Oklo requires remote employees to travel to headquarters (Santa Clara, CA) twice a quarter annually, based on business or team needs, including attendance at team meetings, off-sites, and other company events or gatherings. About Oklo compensation: $70,000-$120,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories. #CHOP: Oklo's Values Collaboration: We go further, together. We bring diverse perspectives, listen actively, and build trust through transparency and respect. We work across disciplines, sharing ownership to turn complex challenges into shared successes. Humility: We are team players who act for the good of the company and for the world. We are focused on our mission, not personal recognition. Ownership: We take pride in what we do and how we do it. We are proactive in finding solutions and see tasks through to completion. We are committed to delivering on our promises to provide clean, reliable, and affordable energy. Pathfinding: We chart new ground where no path exists by approaching challenges with curiosity, courage, and creativity while navigating ambiguity. Recruitment Fraud Disclaimer Oklo is aware of recent recruitment fraud attempts targeting job seekers. Please be cautious of anyone claiming to represent Oklo who does not contact you from an official Oklo email address. All legitimate communications from our recruiting team- including application updates, interview requests, and job offers - will come exclusively from an @oklo.com email. Oklo will never ask for sensitive personal information, payments, or account credentials during the hiring process. If you receive suspicious outreach or have concerns about the authenticity of any communication claiming to be from Oklo, please contact us through the official channels listed on our website.

Provide comprehensive executive support, manage projects, and coordinate logistics for internal and external stakeholders. | Proven experience as an executive assistant supporting high-level executives, strong organizational skills, proficiency with relevant software, and excellent communication skills. | Thanks for your interest in Oklo! We are searching for an Executive Assistant to Oklo's Chief Financial Officer to join our team. Position Description Oklo is seeking an experienced, dynamic, technically capable Executive Assistant to support our Chief Financial Officer. This role demands a combination of administrative prowess, flawless execution of tasks, a team player and the agility to navigate a fast-moving company in an exciting industries of advanced fission (nuclear energy) and radio isotope production. The position will also provide support to the Finance team overall and other critical roles like Head of Legal. Specific responsibilities may include: Provide comprehensive support to the CFO, including calendar management, coordinating meetings, and handling travel arrangements. Serve as a liaison between CFO and other internal departments as well as external stakeholders. Efficiently process and distill a high volume of incoming information, presenting it in a prioritized manner to CFO, and facilitating subsequent actions. Prepare and edit presentations, reports, and other critical financial related documents, ensuring accuracy and timely delivery. Manage confidential information with discretion, upholding the company's data protection standards. Proactively address and resolve administrative and technical challenges. Assist with project coordination, ensuring milestones are met and updates are communicated effectively. Handle ad-hoc tasks and projects as required, showcasing resourcefulness and adaptability. Schedule events with key stakeholders efficiently and smoothly. Work in close collaboration with other Executive Assistants in the company. Manage and coordinate logistics for investor relations activities, including conference attendance, headquarters visits, and investor meetings. Own and maintain operational trackers and spreadsheets supporting hiring, project status, investor engagement, and accounting/finance activities. Prepare briefing materials and meeting support for the CFO in advance of critical internal and external engagements. Minimum Qualifications: Bachelor’s degree or equivalent experience. Proven experience as an executive assistant or in a similar role, with a preference for those familiar within technical environments. Strong technical proficiency with the ability to quickly adapt to new tools and software including Google Suite, Slack, Box, Atlassian, Asana, Microsoft Office, Greenhouse, Ramp, and Navan. Exceptional organizational skills and attention to detail. Excellent communication skills, both verbal and written. Demonstrate strong administrative capabilities, with document tracking discipline. Remain calm under pressure and effective in high-visibility, high-impact situations. Basic knowledge of finance and capital markets is a plus, but not required. Ability to work in a fast-paced environment, multitask, and prioritize tasks. A proactive, entrepreneurial mindset, with the ability to anticipate needs and challenges. Knowledge of the nuclear power industry is a plus, but not required. In your cover letter, please include, describe and link to any creative work you are particularly proud of whether that be an event you planned, artwork, article/blog post, a website you designed, or even a social media account. Competencies You are passionate about clean energy and making advanced fission a reality You have a go get-it attitude You love doing all kinds of things and working in a place where no day is the same You’re savvy with technology and like learning new software You have worked a good amount with Microsoft Office Suite and Adobe Acrobat - you know how to do tracked changes and add redlining or comments to documents, you know how to create PDFs, or at least you are a quick learner or know how to figure it out! You exhibit strong stakeholder management skills, with a high degree of professionalism and diplomacy. You have excellent grammar and spelling! You can handle having a lot of different tasks at a time and know how to prioritize and multitask Excellent written and verbal communication skills in English, although other language skills are awesome too Strong attention to detail You enjoy organizing You are a relatively early riser and don’t mind helping out in the early morning east coast time You are comfortable with flexible hours and working remotely Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo travel requirements: Oklo requires remote employees to travel to headquarters (Santa Clara, CA) twice a quarter annually, based on business or team needs, including attendance at team meetings, off-sites, and other company events or gatherings. About Oklo compensation: $70,000-$120,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories. #CHOP: Oklo’s Values Collaboration: We go further, together. We bring diverse perspectives, listen actively, and build trust through transparency and respect. We work across disciplines, sharing ownership to turn complex challenges into shared successes. Humility: We are team players who act for the good of the company and for the world. We are focused on our mission, not personal recognition. Ownership: We take pride in what we do and how we do it. We are proactive in finding solutions and see tasks through to completion. We are committed to delivering on our promises to provide clean, reliable, and affordable energy. Pathfinding: We chart new ground where no path exists by approaching challenges with curiosity, courage, and creativity while navigating ambiguity. Recruitment Fraud Disclaimer Oklo is aware of recent recruitment fraud attempts targeting job seekers. Please be cautious of anyone claiming to represent Oklo who does not contact you from an official Oklo email address. All legitimate communications from our recruiting team— including application updates, interview requests, and job offers — will come exclusively from an @oklo.com email. Oklo will never ask for sensitive personal information, payments, or account credentials during the hiring process. If you receive suspicious outreach or have concerns about the authenticity of any communication claiming to be from Oklo, please contact us through the official channels listed on our website.

A Security Engineer at Oklo is responsible for assessing, designing, and justifying the effectiveness of site security at facilities possessing special nuclear material. The role requires a creative mindset to envision challenges against a security system and develop justifications for control measures. | Candidates should have a bachelor's degree or similar technical experience, familiarity with firearms and explosives, and experience with regulatory compliance. Knowledge of U.S. nuclear regulations and strong problem-solving skills are essential. | Thanks for your interest in Oklo! We are searching for a Security Engineer to join our team. We are looking to fill this position immediately. Description A Security Engineer at Oklo is responsible for assessing, designing, and justifying the effectiveness of site security at facilities possessing special nuclear material. The work of an Oklo Security Engineer is a comprehensive role that demands a creative mindset, able to envision challenges against a security system and develop the justification of control measures that provide an adequate assurance of protection. Design and compliance of security systems responsible for the protection of special nuclear material involves a comfort with navigating U.S. nuclear regulations and guidance to produce defensible security plans against complex challenges. As a member of the greater engineering organization at Oklo, collaboration is a necessity. In the realm of security, significant breadth and appetite for understanding system interdependency is a must for security specialists expected to justify adequate protective strategies across a nuclear facility of interrelated systems. Responsibilities Passionate about clean energy, the environment, and making advanced fission a reality Willing and able to learn quickly and to think differently in a highly regulated and prescriptive industry Able to assess threat environments with an analytical mindset for substantiation Knowledge of 10 CFR 73 and 10 CFR 70, along with NRC Regulatory Guides and other regulatory guidance Precise communication skills, including the ability to communicate nuanced technical content in multiple forms Comfortable in a fast-paced, highly iterative startup environment Eager to work on a dynamic team, receive constructive feedback, and grow with us Flexible and open to new ideas; ability to work with a highly collaborative team Minimum Qualifications: Bachelor’s degree or similar experience in technical exposure Familiarity with the capabilities various firearms, explosives and tactical equipment Experience with regulatory compliance Experience with national threat policy Strong problem-solving skills and the ability to work effectively in multi-disciplinary teams Eligible and able to maintain access to safeguards information Bonus Qualifications: Military or law enforcement experience Recent experience with demolition methods Experience with adversary analysis or “red team planning” Experience as a force-on-force member or observer/controller Experience with tabletop and scenario development Familiarity with implementation of NIST control frameworks Current national security information background investigation or safeguards access Competencies: Passionate about clean energy, the environment, and making advanced fission a reality Willing and able to learn quickly and to think differently in a highly regulated and prescriptive industry Able to assess threat environments with an analytical mindset for substantiation Knowledge of 10 CFR 73 and 10 CFR 70, along with NRC Regulatory Guides and other regulatory guidance Precise communication skills, including the ability to communicate nuanced technical content in multiple forms Comfortable in a fast-paced, highly iterative startup environment Eager to work on a dynamic team, receive constructive feedback, and grow with us Flexible and open to new ideas; ability to work with a highly collaborative team Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: Salary: $70,000-$150,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. Preferred Location: Santa Clara, CA About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

Administer and optimize Siemens Teamcenter PLM environment including installation, upgrades, workflow configuration, CAD integrations, user support, security compliance, and collaboration with IT/DevOps teams. | 3+ years of Siemens Teamcenter and NX administration experience, proficiency with BMIDE, CAD integrations, database and server knowledge, troubleshooting skills, and familiarity with regulated environment compliance. | Thanks for your interest in Oklo! We are searching for a talented Teamcenter Administrator to join our team. Position Description We are seeking a Teamcenter Administrator to maintain, configure, and optimize our PLM environment in support of engineering, manufacturing, IT, and quality teams. This role involves administering Teamcenter architectures (4-tier and Active Workspace), managing workflows and data models with BMIDE, supporting CAD and enterprise system integrations, and providing user support and training. The administrator will also troubleshoot issues, monitor performance, and apply automation practices to ensure reliable, efficient, and scalable PLM operations. In addition, this role will support environment security and compliance requirements, coordinate closely with IT/DevOps to align hybrid cloud and AWS GovCloud infrastructure, and contribute to system performance tuning and scalability. The administrator will also help define and maintain cross-module workflows for revision control, document management, and change management, while creating training materials to support user adoption and onboarding. Specific responsibilities may include • Administer and maintain Siemens Teamcenter (4-tier and Active Workspace). • Support installation, upgrades, patching, and performance monitoring. • Configure workflows, access controls, lifecycles, and business rules using BMIDE. • Manage Teamcenter modules such as Requirements, Document Management, and Change Management. • Oversee integrations with CAD tools (primarily Siemens NX) and manage PLM/CAD data flows. • Provide end-user support, training, and documentation. • Contribute to automation initiatives and process improvements. • Monitor system health, maintain backups, and ensure data integrity. • Implement and monitor role-based access controls, audit logging, and compliance safeguards for regulated environments (e.g., NQA-1, SOC 2, SOX, ITAR). • Work with IT/DevOps to manage Teamcenter environments in hybrid/on-prem and AWS GovCloud infrastructure. • Assist in performance tuning, load testing, and scaling to meet the needs of growing engineering datasets. • Support standardization of document management, revision control, and change workflows across modules. • Develop modular training guides and onboarding materials to improve adoption across engineering and non-engineering teams. Minimum Qualifications • 3+ years of experience as a CAD/PLM administrator with Siemens NX and Teamcenter. • Hands-on experience with Teamcenter installation, upgrades, patching, and configuration in enterprise environments. • Proficiency with BMIDE for configuring workflows, lifecycles, access controls, and business rules. • Experience supporting CAD integrations, preferably Siemens NX, and managing PLM/CAD data flows. • Knowledge of databases (Oracle, SQL Server, PostgreSQL) and application servers (WebLogic, Tomcat, or similar). • Strong troubleshooting and root-cause analysis skills, with proven ability to implement preventive solutions. • Ability to produce clear technical documentation and deliver effective end-user training. • Strong communication and collaboration skills across engineering, IT, manufacturing, and quality teams. • Familiarity with security and compliance practices for enterprise or regulated environments. • Experience collaborating with IT or DevOps teams to support infrastructure, cloud environments, or automation of deployments. • Certification in AWS and/or Siemens NX/Teamcenter Administration is a plus. Bonus Qualifications: • Siemens Teamcenter Administration Certification. • Experience with distributed Teamcenter architectures, especially 4-tier Active Workspace. • Exposure to automation scripting, CI/CD workflows, or GitLab-based integrations. • Background in training development or structured onboarding for engineering tools. • Familiarity with Agile project workflows and cross-functional collaboration practices. • Hands-on familiarity with near-term Teamcenter modules we're implementing at Oklo: Requirements, Document Management, and Change Management; bonus for exposure to BOM/release workflows and Active Workspace configuration. Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won't enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn't about a fake or arbitrary "pieces of flair" mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren't about taking credit for ourselves, and we aren't about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: The salary range is $100,000 - $155,000 base, depending on experience and qualifications. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

Manage and grow the test engineering function, oversee test planning and execution, collaborate with engineering and regulatory teams, and ensure data quality and compliance. | Bachelor’s degree in mechanical, nuclear, electrical or related engineering, 10+ years test engineering experience with leadership, familiarity with regulated industries and test systems. | Position Description Oklo is looking for an experienced and driven leader to manage and grow our test engineering function. This role will oversee the planning, execution, and continuous improvement of test programs across Oklo’s engineering portfolio, including prototypic thermal-hydraulic facilities, sodium test systems, and component qualification testing. You will work closely with design engineering, safety analysis, and regulatory teams to ensure test data supports licensing and deployment of Oklo’s advanced reactors. As Sr. Manager, you will both help set the vision and dive into the details: building teams, developing infrastructure, and rolling up your sleeves to solve problems. You will be instrumental in ensuring Oklo’s test facilities deliver high-quality, traceable data that enables our technology to move quickly and confidently through design, licensing, and deployment. Specific responsibilities may include: Own the roadmap for Oklo’s hardware test infrastructure. Develop and maintain a structured approach for test planning, execution, and reporting that meets technical, regulatory, and safety requirements. Manage multidisciplinary teams of engineers and technicians to execute tests on time and within budget. Collaborate with design engineers to define test objectives, test acceptance criteria, and instrumentation strategies. Lead procurement and integration of major test equipment and facilities. Ensure data quality, traceability, and configuration control for all test results, with links to requirements and V&V artifacts. Build strong interfaces with safety, licensing, and regulatory teams to ensure test programs provide defensible results. Mentor and grow a high-performing test engineering team, fostering a culture of rigor, creativity, and accountability. Competencies Strategic and hands-on: able to set long-term direction while engaging in daily problem-solving. Strong technical background in thermal-hydraulic testing, component qualification, or large-scale experimental facilities. Proven ability to manage teams, schedules, budgets, and complex projects. Excellent communicator—able to bridge technical detail and high-level objectives. Demonstrated ability to implement quality and safety processes in test environments. Thrives in fast-moving environments and is motivated by building first-of-a-kind systems. Minimum Qualifications Bachelor’s degree in mechanical, nuclear, electrical, or related engineering discipline. At least 10 years of experience in test engineering, with increasing responsibility in leadership or management. Experience in developing and executing test programs in highly regulated industries (nuclear, aerospace, defense, or similar). Familiarity with instrumentation, data acquisition systems, and facility operations. Demonstrated track record of delivering complex test programs. Bonus Qualifications Master’s degree or PhD in a relevant engineering field. Experience with sodium or other alkali metal test systems. Prior experience supporting regulatory submittals with test data. Familiarity with Siemens Teamcenter or other PLM/requirements traceability tools. Strong network within the test engineering and facility operations community. Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: $150,000- 180,000 Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. This position may involve access to information subject to U.S. export control laws. Only applicants who meet the definition of a U.S. person under applicable laws may be eligible. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

The Systems Engineer will support the requirements management process across complex engineering efforts, ensuring requirements are well-structured and integrated into the product lifecycle. Responsibilities include leading the configuration of Siemens Teamcenter Requirements and collaborating with various teams to manage clear and verifiable requirements. | Candidates should have a Bachelor's degree in a technical field and 3+ years of experience in requirements management for complex engineering systems. Proficiency with Siemens Teamcenter and familiarity with regulated industries are preferred qualifications. | Remote Thanks for your interest in Oklo! We are searching for a Systems Engineer to join our team. Position Description Oklo is transforming the future of energy, and we’re looking for a Systems Engineer with 3-5 years of dedicated experience in requirements management within regulated industries. In this role, you will support the requirements management process across complex, multidisciplinary engineering efforts. You will be responsible for ensuring requirements are well-structured, traceable, verifiable, and integrated into our product lifecycle. Your work will support the design and deployment of Oklo's products and services. Specific responsibilities may include: Lead the configuration and use of Siemens Teamcenter Requirements for the development and management of requirements across engineering teams Collaborate with design, analysis, and regulatory teams to define and manage clear, verifiable, and traceable requirements Develop and maintain requirement hierarchies, traceability matrices, and verification plans Drive consistency and quality of requirements across technical disciplines, helping ensure compliance with regulatory and safety standards Train and support team members in the use of Siemens Teamcenter Requirements and best practices in requirements development Leverage systems thinking knowledge and expertise to support system owners/responsible engineers in ensuring system interfaces/ICDs are clearly defined and executed Champion requirements change control and configuration management processes Competencies Organized: Organized and proactive in managing information and tasks Passion: Passionate about clean energy and making advanced fission a reality Analytical: Ability to think in structured, hierarchical frameworks Detail-Oriented: Strong attention to detail with a drive for clarity and precision Effective Communication: Excellent written and verbal communication skills Minimum Qualifications Bachelor's degree in a technical field, such as nuclear, mechanical, or aerospace engineering. 3+ years of experience in a requirements management role for complex engineering systems Strong communication and organizational skills, with a proven ability to work across diverse technical teams Bonus Qualifications Proficiency with Siemens Teamcenter and TcRequirements, including configuration, customization, and end-user support Advanced degree in engineering or systems engineering Familiarity with systems engineering standards such as INCOSE and experience applying MBSE principles Experience in highly regulated industries (e.g. aerospace, nuclear, automotive, defense) Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation Salary: $90,000 - $130,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

The Neutronics Analysis Engineer is responsible for defining, developing, and executing neutronics analyses to support reactor design and safety assurance. This role involves collaboration with the design team to establish requirements and implement models and methods for various analyses. | Candidates should have a Bachelor's, Master's, or PhD in a technical field, preferably nuclear engineering, with experience in reactor design and analysis. Proficiency in Monte Carlo and deterministic codes, as well as fluency in Python and experience with high performance computing systems, is highly recommended. | Thanks for your interest in Oklo! We are searching for a Neutronics Analysis Engineer to work with our engineering team and help us wrangle the neutrons. Position Description The Neutronics Analysis Engineer is responsible for defining, developing, and executing in-core and ex-core neutronics analyses to support reactor design, performance evaluation, and safety assurance. This role involves working closely with the broader design team to solicit and capture requirements, establish the scope of neutronic evaluations, and implement appropriate models and methods. Areas of analysis include, but are not limited to, criticality, depletion, activation, and shielding. The engineer will also support verification and validation activities and contribute to licensing and regulatory interactions by providing technically sound and defensible neutronics analyses. Specific responsibilities may include: Perform the complete range of actions involved in supporting core design and fuel cycle analysis using Monte Carlo and deterministic codes on Oklo reactors. Perform calculations and analyses in Monte Carlo based codes such as Serpent, MCNP, SCALE, and OpenMC. Perform calculations and analyses with fast reactor deterministic codes such as DIF3D, PERSENT. Support the qualification and verification of neutronic analyses, including validation against experiments and benchmarks. Be aware of and familiar with fast reactor core design and analysis work being performed internationally, as well as related benchmark calculations and experiments being performed internationally Provide technical feedback to quick-iterating design teams. Document work using modern tools and techniques, and write well-written, thoughtful technical reports. Competencies We are looking for a neutronics engineer that is: Passionate about clean energy Passionate about making advanced fission a reality Willing and able to learn quickly Knowledgeable about fast reactor design Highly skilled with Monte Carlo neutronics tools such as SERPENT, MCNP, SCALE and Open-MC Skilled with deterministic fast reactor tools, or wiling and eager to learn Eager to work on a dynamic team, receive constructive feedback, and grow with us Willing to think differently and do things in new ways Comfortable in a fast-paced, highly iterative startup environment Excited to think creatively, critically, and reflectively about the problems they are solving, while not leaning only on what has been done before Willing to propose novel and creative solutions to technical problems An excellent writer who can write in modern active voice, so make your cover letter compelling and write it well! Able to communicate technical content and results verbally Who you are: A startup person. You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: this focus is a big part of excellence, consistency, and quality. Even excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. Minimum Qualifications: If you have experience and expertise in reactor design, apply! We also think the following are good indicators of qualifications to do this job: Bachelors, Masters, or PhD in a technical field, such as nuclear engineering, with experience in reactor design and analysis (Masters or PhD may be preferable) Fluency with Python Experience with modern object oriented languages, preferably C++ Proficiency with high performance computing systems Experience with fast reactor design and analysis is highly recommended Proficiency with MCNP and SERPENT is highly recommended Proficiency with ORNL’s SCALE code system (TRITON, KENO, SAMPLER, etc.) is recommended. Proficiency with Argonne's ARC codes (MC2, DIF3D, etc.) is recommended About Oklo compensation: Salary: $102,000-$225,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers untracked paid time off, competitive pay, equity, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

The Safety Analysis Engineer is responsible for designing and developing analyses that form the safety bases for Oklo’s reactor systems. This includes reviewing regulatory documents, developing technical strategies, and collaborating with other engineers on licensing deliverables. | Candidates should have a degree in a technical field and proficiency in thermal-hydraulics analysis. Experience with systems-level analysis codes and reactor transient analysis methods is highly recommended. | Thanks for your interest in Oklo! We are searching for a Safety Analysis Engineer to join our team. Position Description The Safety Analysis Engineer is responsible for designing and developing analyses that form the safety bases that will be incorporated in the license application for Oklo’s reactor systems. This position includes review of regulatory document and codes, developing technical strategies, designing and executing engineering analyses, conducting modeling and simulation, and crafting documentation. Additionally, the team member in this position collaborates closely with other regulatory and design engineers, aiding in the execution of key design and licensing deliverables. Specific responsibilities may include the following: Performing safety analysis using quantitative and qualitative methodologies Developing safety bases Working collaboratively with an interdisciplinary team to establish functional, performance, safety, and other facility requirements, and to engineer effective optimized mitigations Executing licensing projects and contributing strategically to licensing deliverables Managing projects for an interdisciplinary team of engineers Developing analytical and computational methods and models Documenting work using modern tools and techniques, and writing well-written, thoughtful technical reports Competencies We are looking for a Safety Analysis Engineer that is: Passionate about clean energy Passionate about making advanced fission a reality Experienced with building formal safety bases Willing and able to learn quickly Willing to think differently and do things in new ways Comfortable in a fast-paced, highly iterative startup environment Able to communicate technical content and results in written form and verbally Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. Minimum Qualifications Proficiency with thermal-hydraulics analysis Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering Experience with systems-level analysis codes such as SAS4A/SASSYS-1, SAM, RELAP, TRACE, GOTHIC, or equivalent is highly recommended Experience with reactor transient analysis methods Fluency with Python Bonus Qualifications Core competencies in heat transfer, fluid dynamics, and thermodynamics first principles Professional experience developing or amending safety case analyses on high-hazard or highly-regulated facilities Prior experience developing or amending safety bases and associated documentation for NRC-licensed or DOE-authorized nuclear facilities Experience with specific safety analyses (e.g., steam link break or fuel relocation analysis) Knowledgeable about fast reactors and fuel cycle activities Competency with modern software engineering practices and programming languages Experience with CI/CD computing environments About Oklo compensation: Salary: $80,000-$185,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

Mechanical Analyst Engineers are responsible for the analysis of mechanical components as part of the power plant design. They perform rigorous mechanical analyses and collaborate with cross-functional teams to drive design decisions. | Candidates must have a Bachelor's degree in a relevant engineering discipline and at least 4 years of industry experience in mechanical or structural analysis. Proven experience with FEA tools and strong communication skills are also required. | Thanks for your interest in Oklo! We are searching for a passionate, highly-analytical, and detail-oriented Mechanical Analyst Engineer to join our engineering team. Position Description: Mechanical Analyst Engineers at Oklo are responsible for the analysis of mechanical components as part of the power plant design. This role is ideal for a mechanical engineer who thrives on solving complex problems through first-principles thinking, rapid iteration hand calculations, and finite element analysis (FEA) when the project requires. You will play a critical role in the progression and optimization of mechanical designs, working closely with design, manufacturing, and testing teams as well as coordinating with external vendors for additional analysis support. The ideal candidate will demonstrate a strong foundation in fundamental mechanics and strength of materials, with additional expertise in areas such as dynamics, creep, fatigue, and heat transfer. A key aspect of this role includes producing clear, traceable, and reviewable documentation of analytical work, and using your results to recommend design changes or other next steps. You will also contribute to the development and maintenance of in-house analysis methodologies and best practices to support consistency, scalability, and knowledge sharing across the engineering team. Specific responsibilities may include: Perform rigorous mechanical analyses across all levels of fidelity from hand calculations and textbook formulas to highly detailed Finite Element Analysis (FEA) Evaluate structural performance for stress, creep, fatigue, vibration, temperature limits, and other failure modes Interpret and apply relevant engineering standards and codes (e.g., ASME, ASCE, AISC) to establish appropriate design limits and acceptance criteria Develop clear, concise, and technically sound documentation of engineering methodologies, analysis results, and design justifications Summarize mechanical analysis results in written documents and presentation slides, translating complex data into concise summaries of key findings (e.g., peak stresses, safety margins) and actionable design revision recommendations, and present those results to management and various stakeholders Collaborate with cross-functional teams, including design, manufacturing, quality, and test engineering to drive design decisions and ensure robust product development Support the creation and refinement of product requirements Plan and execute validation and verification activities, including designing and overseeing physical test programs to validate engineering assumptions and design requirements Competencies: Passionate about advancing clean energy technologies, with a strong belief in the potential of next-generation fission Well-versed in structural mechanics, design principles, and analytical methods—across both simulation and practical applications Eager to contribute to a high-performing engineering team, open to feedback, and committed to continuous technical growth Quick to learn and unafraid to question assumptions—ready to explore unconventional approaches to complex challenges Comfortable navigating the pace, ambiguity, and evolution of an innovative startup environment Brings a thoughtful, systems-level perspective to mechanical problems—balancing creativity, rigor, and first-principles thinking Communicates technical analyses clearly and concisely, with strong writing skills and a modern, active voice Minimum Qualifications: Bachelor’s or higher degree in a relevant engineering discipline (e.g., mechanical, aerospace, materials) 4+ years of industry experience performing mechanical or structural analysis within sectors such as such as energy, aerospace, automotive, defense, industrial machinery, or advanced manufacturing Proven experience in structural analysis using FEA tools (e.g., Ansys, Abaqus, COMSOL) Demonstrated ability to write comprehensive technical documentation and reports Excellent communication and collaboration skills in a multidisciplinary engineering environment Bonus Qualifications: Master's or PhD in engineering Strong programming skills for automating analysis workflows—preferably Python, with good software development practices Familiarity with the ASME Boiler and Pressure Vessel Code Section III, Division 1 or 5 Section VIII, Division 2 Nuclear-specific code cases Experience developing and managing product requirements and associated test and verification plans Familiarity with configuration management and version control systems (e.g., Git, SVN, etc.) Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: Salary: $90,000-$150,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

The Neutronics Engineer will perform reactor design calculations, including core design and fuel cycle analyses, and design irradiation targets for radioisotope production. Responsibilities also include using Monte Carlo and deterministic codes for various reactor analyses and providing technical feedback to design teams. | Candidates should have experience in reactor design and analysis, with a preference for advanced degrees in nuclear engineering. Proficiency in Monte Carlo tools and programming languages like Python and C++ is essential. | Thank you for your interest in Oklo! We are searching for a Neutronics Engineer to join our radioisotopes team. Position Description: The Neutronics Engineer is responsible for performing reactor design calculations that include core design and fuel cycle analyses. Other work includes the design of irradiation targets for radioisotope production and how those targets affect the local and macro reactor core system (self-shielding, fuel consumption, production yield, etc.) Specific responsibilities may include: Perform the complete range of actions involved in core design and fuel cycle analysis using Monte Carlo and deterministic codes on Oklo/Atomic Alchemy reactors. These include core design, core sizing, core optimization, reactivity feedback, core lifetime, and criticality analyses, among others. Perform calculations and analyses in Monte Carlo based codes such as MCNP, Serpent, and OpenMC. Perform calculations and analyses with deterministic codes such as CASMO/SIMULATE or HELIOS. Be aware of and familiar with research reactor core design and analysis work being performed internationally, as well as related benchmark calculations and experiments being performed internationally. Provide technical feedback to quick-iterating design teams. Document work using modern tools and techniques, and write well-written, thoughtful technical reports. Competencies: We are looking for a Neutronics Engineer that is: Passionate about making advanced industrial-scale radioisotope production Knowledgeable about research reactor design Highly skilled with Monte Carlo neutronics tools such as MCNP, SERPENT, and Open-MC Skilled with deterministic fast reactor tools, or wiling and eager to learn Eager to work on a dynamic team, receive constructive feedback, and grow with us Passionate about making “radioisotope shortage” a bygone phrase An optimist at heart Willing and able to learn quickly Willing to think differently and do things in new ways Comfortable in a fast-paced, highly iterative startup environment Excited to think creatively, critically, and reflectively about the problems they are solving while not leaning only on what has been done before Willing to propose novel and creative solutions to technical problems An excellent writer who can write in a modern active voice, so make your cover letter compelling and write it well! Able to communicate technical content and results verbally Experience level: Intermediate (2-5yr) or Experienced (5-10yr) Minimum Qualifications: If you have experience and expertise in reactor design, apply! We also think the following are good indicators of qualifications to do this job: Bachelors, Masters, or PhD in a technical field, such as nuclear engineering, with experience in reactor design and analysis (Masters or PhD may be preferable) Fluency with Python Experience with modern object oriented languages, preferably C++ Proficiency with high performance computing systems Proficiency with MCNP and SERPENT is highly recommended Bonus Qualifications: Hands-on experience in a reactor setting. Not required, but it is a bonus to not have purely theoretical/modeling experience. Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Even excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: $102,000-$190,000 Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

Lead or support the design of radiological hot cells for used nuclear fuel recycling, focusing on systems like shielding and remote handling. Collaborate with a multidisciplinary team to ensure the integration of critical systems into the facility. | A Bachelor's degree in Mechanical or Nuclear Engineering and 5+ years of relevant experience are required. Strong knowledge of remote handling systems and radiation shielding principles is essential. | Thanks for your interest in Oklo! We are searching for a radiological Hot Cell Design Engineer to join our dynamic fuel recycling engineering group, which is designing and deploying a modern nuclear fuel recycling facility. This is a rare opportunity to contribute to the design and development of one of the most advanced radiological hot cell systems ever. Position Description: As a Hot Cell Design Engineer at Oklo, you will help shape a highly specialized, remotely-operable hot cell environment that enables the safe, efficient processing of used nuclear fuel (UNF). You’ll work collaboratively with a multidisciplinary team of mechanical, nuclear, chemical, and controls engineers to integrate critical systems such as shielding, containment, and remote operations into an industrial-scale recycling facility. Key Responsibilities: Lead or support the mechanical and systems design of radiological hot cells used in UNF recycling, including shielding, ventilation, confinement, and remote handling systems Define equipment and material layouts, including material transfer pathways and maintenance access strategies Work with radiation modeling and safety analysis specialists to develop shielding requirements and establish design constraints Integrate robotic and remote handling technologies (e.g., manipulators, cameras, cranes, etc.) into cell design Contribute to the structural evaluation of confinement systems, ensuring compliance with fire protection, external hazard, and natural phenomena hazard requirements Collaborate with structural, HVAC, instrumentation, and process engineers to ensure seamless integration across all hot cell systems Participate in Failure Modes and Effects Analyses (FMEA), hazard analyses, and radiological safety assessments Contribute to design reviews, procurement specifications, and installation and commissioning plans Support prototyping, testing, and commissioning of hot cell subsystems Competencies: We are looking for a Hot Cell Design Engineer that is: Passionate about clean energy, fuel recycling, and efficient stewardship of natural resources An optimist at heart Passionate about making advanced fission a reality Willing and able to learn quickly Willing to think differently and do things in new ways Comfortable in a fast-paced, highly-iterative startup environment Excited to think creatively, critically, and reflectively about the problems they are solving while not leaning only on what has been done before Willing to propose novel and creative solutions to technical problems An excellent writer who can write in a modern active voice (so make your cover letter compelling and write it well!) Able to communicate technical content and results verbally Minimum Qualifications: Bachelor’s degree or higher in Mechanical Engineering, Nuclear Engineering, or a related discipline 5+ years of experience in radiological facility design, glovebox or hot cell engineering, or radiological material handling Strong working knowledge of remote handling systems, robotics, or manipulator technologies Understanding of radiation shielding principles, criticality safety, and radiological protection standards Excellent written and verbal communication skills Demonstrated ability to collaborate on cross-functional teams and integrate feedback from engineering, licensing, and safety Strong systems engineering intuition and problem-solving capabilities U.S. citizenship or permanent residency status (due to export control requirements) Bonus Qualifications: Experience with hot cells used in nuclear fuel cycle facilities, isotope production, or defense applications Proficiency with CAD software (e.g., NX, SolidWorks, Inventor) and engineering drawing standards Knowledge of NRC and/or DOE regulatory requirements and nuclear standards for nuclear facilities Prior hands-on experience with mockups, prototyping, or commissioning of radiological systems Experience with vendor coordination, A&E firms, and project management Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Even excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: Salary: $80,000-$180,000 Salary may fall outside of the range provided and will be dependent on applicant experience. Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

The Safety Analysis Engineer will support the development of the safety basis for a nuclear fuel recycling facility, including hazard identification and evaluation. Responsibilities also include developing safety basis documents and supporting various safety programs. | Candidates should have a Bachelor's degree in a relevant engineering discipline and 3-5 years of experience in nuclear safety or similar environments. Familiarity with HAZOP and FMEA methods is required, with additional qualifications being a plus. | Thanks for your interest in Oklo! We are searching for a Safety Analysis Engineer to join our engineering team. Position Description: We are seeking a skilled Safety Analysis Engineer to support the development of the safety basis for a first-of-a-kind used nuclear fuel recycling facility. You will support the identification and evaluation of hazards/accidents, the designation of Items Relied On For Safety (IROFS), and the development of management measures. Additionally, you will support radiological, subcriticality, chemical, and fire safety programs. Specific responsibilities may include: Develop and maintain safety basis documents according to applicable Nuclear Regulatory Commission regulation and guidance Support Integrated Safety Analysis (ISA), Criticality Safety Evaluations, Fire Hazard Analysis (FHA), and Natural Phenomena Hazard (NPH) analysis Identify and evaluate radiological, criticality, chemical, fire, and natural phenomena hazards Identify and evaluate accident sequences using both inductive and deductive methods Perform deterministic consequence severity calculations for radiological/chemical source term and dose Perform likelihood calculations using qualitative and semi-quantitative (e.g., layers of protection analysis) Designate items relied on for safety (IROFS) for the prevention and mitigation of accidents Develop management measures to ensure adequate availability and reliability of IROFS Competencies: We are looking for a Safety Analysis Engineer that is: Passionate about clean energy An optimist at heart Passionate about making advanced fission a reality Willing and able to learn quickly Willing to think differently and do things in new ways Comfortable in a fast-paced, highly iterative startup environment Excited to think creatively, critically, and reflectively about the problems they are solving while not leaning only on what has been done before Willing to propose novel and creative solutions to technical problems An excellent writer who can write in a modern active voice, so make your cover letter compelling and write it well! Able to communicate technical content and results verbally Experience level: Bachelor’s degree in chemical engineering, mechanical engineering, nuclear engineering, or related discipline; a master's or Ph.D. is highly desirable 3-5 years of experience in experience in nuclear safety, process safety, or similar high-hazard environments. Minimum Qualifications: Hazard and Operability Study (HAZOP) and Failure Modes and Effects (FMEA) PHA methods Bonus Qualifications: NRC licensed fuel cycle facility safety basis development Consequence severity analysis using RADTRAD, MELCOR/MACCS, ARCON and PAVAN Event tree and fault tree analysis NUREG-1513, NUREG-1520, NUREG-1718 and relevant regulatory frameworks Who you are: A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that. Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals. A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team. An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator. Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day. Detail-oriented: This focus is a big part of excellence, consistency, and quality. Even excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward. About Oklo compensation: $85,000-$165,000 annually Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits. We are looking to fill this position immediately! About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.