Sift Stack, Inc.

Build and own frontend surfaces for AI agents analyzing hardware telemetry data with high performance and agentic UX design. | 3+ years professional experience with React, NextJS, TypeScript, strong web performance focus, and interest in AI products. | About Sift Sift is the data infrastructure platform for hardware engineering teams. We turn high-frequency telemetry into engineering insights for mission-critical machines: rockets, satellites, autonomous vehicles, energy systems, and defense platforms. Founded by former SpaceX engineers, we are building the review and analysis layer for the AI era of physical systems. About The Role: Hardware programs generate far more telemetry than any team can review by hand. Sift Agents is our answer: AI agents that work alongside hardware engineers, investigating anomalies, reviewing test and flight data, and answering in minutes questions that used to take a day of scripting. This role comes with real product ownership and autonomy. You will talk directly to customers to understand how they review their machines, decide what to build, and own it from first MVP through every iteration after it ships. The surface area is wide: one day you might be polishing the micro-interactions that make the chat experience feel great, the next you might be building a bespoke caching layer for the chat messages off the main JS thread. We’re heavy users of frontier agentic products ourselves and have strong opinions about what makes them great. Sift Agents is where we put those opinions to work. This is a product engineering role, not a research role. Most of the work is the hard part of making agents feel dependable in the browser: streaming interactions, long-running tasks, rendering agent output over large real-time datasets, and showing engineers exactly what an agent did and why. In This Role, You'll: Talk directly to customers and partner with product to turn real review workflows into agent capabilities: generating dashboards, writing analysis scripts, and surfacing insights buried in their telemetry Build the frontend surfaces where Sift Agents live, and make them feel great Design the interaction patterns of agentic UX: streaming responses, long-running tasks, interruptions, and showing an agent’s work so engineers can trust it Render an agent’s findings alongside the telemetry that backs them, and keep it fast even when the data is large Push the browser to its limits when the data demands it: Web Workers, OPFS-backed caching, and stepping outside React when the framework becomes the bottleneck Contribute to the component library to keep agentic UI patterns consistent across the product Collaborate with backend and full stack engineers on the API design that powers agent sessions The Skillset You'll Bring: 3+ years of professional software engineering experience Get excited about owning a product area: talking to customers, deciding what to build, and shipping it Have built complex, high-performance web applications with technologies like React, NextJS, TypeScript, or similar Have an eye for detail: you notice the micro-interactions, latency, drops in FPS, and polish that separate good interfaces from exceptional ones Are curious about new AI products: you try new agents, models, and features as they ship, and have opinions about what makes them good If this role excites you, apply even if you don’t check every box. Bonus Points: Shipped products to users at scale: large data volumes, significant active user counts, or deep technical complexity Shipped LLM-powered features Built chat or agentic interfaces: streaming responses, tool-call rendering, long-running tasks A strong understanding of web performance optimization and browser rendering Worked with modern CSS (Tailwind) and component libraries (Radix UI) to build design systems Used technical visualization tools (WebGL, D3.js, Apache ECharts), WebAssembly, and time-series data Built tools for technical users (dashboards, data-editing environments) A personal ecosystem of AI dev tooling: custom agents, skills, scripts, or workflows built to ship faster A background in scientific computing or hardware test and telemetry Engineering At SIFT: You'll have the opportunity to help evolve and scale our platform because we're still in the early stages of building the product. Relevant technologies include: Web frontend & backend: React, TypeScript, Redux, Tailwind, WebAssembly, D3.js, WebGL, and Go Data: Parquet, Flink, Kafka, Redpanda, Beam, DuckDB, Timescale, QuestDB, InfluxDB, and Druid Infrastructure: GitHub Actions, AWS, Azure, GCP, Docker, Kubernetes, and Terraform Location: Sift’s headquarters is in Marina Del Rey, CA (Next to LAX). We collaborate in person twice a week—on Mondays and Thursdays—and come together for a full week every two months. We are open to relocating candidates to LA or working from our San Francisco office for the right candidate. Salary range: $160,000 - $200,000 per year. Plus equity and benefits. Eligibility: U.S. Person Required: Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) regulations.

Build and own frontend surfaces for AI agents analyzing telemetry data with agentic UX design and real-time data visualization. | 8+ years professional software engineering experience with React, TypeScript, and high-performance web apps, U.S. person required. | About Sift Sift is the data infrastructure platform for hardware engineering teams. We turn high-frequency telemetry into engineering insights for mission-critical machines: rockets, satellites, autonomous vehicles, energy systems, and defense platforms. Founded by former SpaceX engineers, we are building the review and analysis layer for the AI era of physical systems. About The Role: Hardware programs generate far more telemetry than any team can review by hand. Sift Agents is our answer: AI agents that work alongside hardware engineers, investigating anomalies, reviewing test and flight data, and answering in minutes questions that used to take a day of scripting. This role comes with real product ownership and autonomy. You will talk directly to customers to understand how they review their machines, decide what to build, and own it from first MVP through every iteration after it ships. The surface area is wide: one day you might be polishing the micro-interactions that make the chat experience feel great, the next you might be building a bespoke caching layer for the chat messages off the main JS thread. We’re heavy users of frontier agentic products ourselves and have strong opinions about what makes them great. Sift Agents is where we put those opinions to work. This is a product engineering role, not a research role. Most of the work is the hard part of making agents feel dependable in the browser: streaming interactions, long-running tasks, rendering agent output over large real-time datasets, and showing engineers exactly what an agent did and why. In This Role, You'll: Talk directly to customers and partner with product to turn real review workflows into agent capabilities: generating dashboards, writing analysis scripts, and surfacing insights buried in their telemetry Build the frontend surfaces where Sift Agents live, and make them feel great Design the interaction patterns of agentic UX: streaming responses, long-running tasks, interruptions, and showing an agent’s work so engineers can trust it Render an agent’s findings alongside the telemetry that backs them, and keep it fast even when the data is large Push the browser to its limits when the data demands it: Web Workers, OPFS-backed caching, and stepping outside React when the framework becomes the bottleneck Contribute to the component library to keep agentic UI patterns consistent across the product Collaborate with backend and full stack engineers on the API design that powers agent sessions The Skillset You'll Bring: 8+ years of professional software engineering experience Get excited about owning a product area: talking to customers, deciding what to build, and shipping it Have built complex, high-performance web applications with technologies like React, NextJS, TypeScript, or similar Have an eye for detail: you notice the micro-interactions, latency, drops in FPS, and polish that separate good interfaces from exceptional ones Are curious about new AI products: you try new agents, models, and features as they ship, and have opinions about what makes them good If this role excites you, apply even if you don’t check every box. Bonus Points: Shipped products to users at scale: large data volumes, significant active user counts, or deep technical complexity Shipped LLM-powered features Built chat or agentic interfaces: streaming responses, tool-call rendering, long-running tasks A strong understanding of web performance optimization and browser rendering Worked with modern CSS (Tailwind) and component libraries (Radix UI) to build design systems Used technical visualization tools (WebGL, D3.js, Apache ECharts), WebAssembly, and time-series data Built tools for technical users (dashboards, data-editing environments) A personal ecosystem of AI dev tooling: custom agents, skills, scripts, or workflows built to ship faster A background in scientific computing or hardware test and telemetry Engineering At SIFT: You'll have the opportunity to help evolve and scale our platform because we're still in the early stages of building the product. Relevant technologies include: Web frontend & backend: React, TypeScript, Redux, Tailwind, WebAssembly, D3.js, WebGL, and Go Data: Parquet, Flink, Kafka, Redpanda, Beam, DuckDB, Timescale, QuestDB, InfluxDB, and Druid Infrastructure: GitHub Actions, AWS, Azure, GCP, Docker, Kubernetes, and Terraform Location: Sift’s headquarters is in Marina Del Rey, CA (Next to LAX). We collaborate in person twice a week—on Mondays and Thursdays—and come together for a full week every two months. We are open to relocating candidates to LA or working from our San Francisco office for the right candidate. Salary range: $180,000 - $230,000 per year. Plus equity and benefits. Eligibility: U.S. Person Required: Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) regulations.

The Head of Product Marketing will continuously improve sales enablement by building and maintaining sales collateral and assets, while also making customer education a priority. They will highlight Sift’s engineering advantage and own competitive and market positioning to support sales efforts. | The ideal candidate should have deep technical fluency and proven storytelling instincts, with experience in GTM execution across various channels. Strong sales enablement skills and strategic market awareness are also essential for this role. | Company Intro At Sift, we’re redefining how modern machines are built, tested, and operated. Our platform gives engineers real-time observability over high-frequency telemetry, eliminating bottlenecks and enabling faster, more reliable development. Sift was born from our work at SpaceX on Dragon, Falcon, Starlink, and Starship—where scaling telemetry, debugging flight systems, and ensuring mission reliability demanded new infrastructure. Founded by a team from SpaceX, Google, and Palantir, Sift is built for mission-critical systems where precision and scalability are non-negotiable. Description Sift is hiring a technical communicator to help us go to market more effectively at a critical moment in our growth. Our platform is used by the most advanced engineering teams in aerospace, defense, and next-gen manufacturing. Reporting to the VP of Marketing, this is an individual contributor role today, with the opportunity to shape and grow the function over time. As product velocity increases, you’ll ensure we can continuously translate technical innovation into compelling, field-ready messaging without pulling product and engineering into every conversation. You’ll scale enablement, lead technical storytelling, and help drive customer education in a category where expectations are evolving, technology is moving fast, but prospects still rely on legacy tools and workflows. The ideal candidate combines the instincts of a developer advocate with the strategic judgment of a GTM leader. You’ll work closely with product, design, and sales to build content that lands with both engineering teams and executive buyers. This role blends product marketing, market education, and field insight to help us tell a sharper story to support sales efforts. Key Responsibilities Continuously Improve Sales Enablement: Build and maintain sales collateral and assets that evolve with the product. Create field-ready decks, demo flows, talk tracks, and objection-handling tools. Help us scale the sales team without scaling dependency on product and engineering. Make Customer Education a First-Class Product: Help engineers onboard faster and understand the “why” behind Sift. Collaborate on demos, product & feature walkthroughs, and technical content that makes our value self-evident. Highlight Sift’s Engineering Advantage: Translate deep technical decisions into competitive advantage. Partner with product and forward-deployed engineers to identify what sets us apart, and tell that story in credible, memorable ways across every channel. Own Competitive & Market Positioning: Monitor adjacent tools and lookalike platforms. Make sure we’re defining the category, not reacting to it. Build tools and messaging that equip the field to defend our position and shift customer perception. Showcase Momentum & Social Proof: Turn customer wins into strategic assets. Build and scale content programs (case studies, event collateral, press) that demonstrate adoption, traction, and credibility, especially in defense, aerospace, and capital markets. Drive Launch Strategy & Messaging: Support GTM execution for new features and product lines. Define launch scope, partner with teams across the company, and own the messaging that introduces Sift to new audiences or capabilities. The Skillset You Bring Deep Technical Fluency: You’ve worked as an engineer, developer, or solutions architect, or spent years adjacent to technical teams. You know how real-world systems are built and can speak with credibility to engineering buyers. Backgrounds in electrical, aerospace, or embedded systems are a strong plus. Proven Storytelling Instincts: You’ve written technical blogs, product content, tutorials, or launch messaging that engineers actually use. You know how to explain why something matters not just how it works. GTM Execution Across Channels: You’ve contributed to product launches, sales campaigns, or competitive positioning. You understand how technical messaging shows up across the funnel from web copy to battlecards to founder decks. Strong Sales Enablement Muscles: You’ve worked with sales before and understand what they need to move deals forward. You can create high-fidelity content that scales effectively. Strategic Market Awareness: You know how to frame a product in a way that matters to the customer and resonates in the market. You can zoom out to tell a compelling story about the space, the problem, and the stakes. Operational Ownership: You’ve worked across functions and know how to take initiative, gather context, and get things shipped. You can turn a high-level idea into something concrete without much oversight. Bias for Action: You’re comfortable operating without a playbook. You thrive in early-stage environments where things change weekly, and you know how to turn velocity into learning. Mission Orientation: You’re drawn to meaningful problems, not just clever ones. You care deeply about the products engineers rely on to build what’s next. Location: Sift’s headquarters is in El Segundo, CA. We collaborate in person twice a week—on Mondays and Thursdays—and come together for a full week every two months. While we prefer team members to be local, we’re open to relocating candidates to LA or considering remote work from the San Francisco area for the right candidate. Salary range: $170,000 - $210,000 per year. Plus equity and benefits. Eligibility: US Person Required: Must be a U.S. Citizen or Green Card Holder due to ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) compliance requirements.

As a Solutions Engineer, you'll partner with the sales team to articulate Sift's value proposition and deliver compelling product demonstrations. You will also own pre-sales technical engagements and help close complex opportunities through your technical expertise. | Candidates should have 4+ years of experience in technical pre-sales or solutions engineering and a proven track record in closing complex technical sales opportunities. A bachelor's degree in computer science, engineering, or a related field is required, along with familiarity with programming languages and cloud platforms. | At Sift, we’re redefining how modern machines are built, tested, and operated. Our platform gives engineers real-time observability over high-frequency telemetry—eliminating bottlenecks and enabling faster, more reliable development. Sift was born from our work at SpaceX on Dragon, Falcon, Starlink, and Starship—where scaling telemetry, debugging flight systems, and ensuring mission reliability demanded new infrastructure. Founded by a team from SpaceX, Google, and Palantir, Sift is built for mission-critical systems where precision and scalability are non-negotiable. About the Role As a Solutions Engineer, you'll be the pre-sales technical bridge between Sift's cutting-edge telemetry platform and our customers' complex engineering challenges. In this role, you'll partner with our sales team to articulate the overall value proposition, vision, and strategy to customers throughout the sales lifecycle. You'll deliver compelling product demonstrations, support technical evaluations, and help close complex opportunities through your advanced technical expertise and credibility. We're looking for an engineer who thrives in customer-facing environments and is passionate about deep technical solutions in industries like aerospace, autonomous systems, and renewable energy. This is a rare opportunity to join an early-stage startup and directly impact the success of next-generation machines. You will be just our second Solutions Engineer, report to our Forward Deployed Engineering Lead, and play a critical role in driving the technical aspects of the sales process. In This Role, You’ll: Partner with the Sales team to articulate the overall Sift value proposition, vision, and strategy to customers Own pre-sales technical engagements with customers during the pilot evaluation phase, communicating our value based on customer needs Deliver compelling technical presentations and product demonstrations to potential clients Help close complex opportunities through advanced competitive knowledge, technical skill, and credibility Develop technical content and documentation that showcases the value of Sift's platform Build and present reference architectures and demo applications to help prospects understand how Sift can meet their specific requirements Provide feedback to Product Management, Engineering, and Marketing to continuously improve Sift's offerings based on customer input Stay current on competitive and complementary technologies in the observability space The Skillset You’ll Bring: 4+ years of experience in technical pre-sales, solutions engineering, or similar customer-facing technical sales roles Proven track record in closing complex technical sales opportunities and navigating enterprise sales cycles Strong storytelling ability with outstanding presentation skills to articulate technical value to both executives and engineering teams Experience translating customer business needs into technical solutions and establishing buy-in with stakeholders at all levels Ability to quickly understand and demonstrate complex technical products in customer-relevant contexts Experience designing, architecting, and presenting technical systems for customers Proficiency with technical demonstrations, POCs, and handling technical objections during sales cycles Familiarity with one or more programming languages (Python, Java, etc.) and REST APIs Bachelor's degree in computer science, engineering, or a related field Interest in aerospace, autonomous systems, or advanced engineering applications Bonus Points: Experience in any of the following: Aerospace systems, satellite operations, or autonomous vehicle development. Data streaming technologies or time-series databases (e.g., Kafka, InfluxDB). SQL and database concepts. Cloud platforms (e.g., AWS, GCP, Azure). Software integration challenges in complex systems. Machine learning or AI applications in engineering. Demonstrated ability to quickly learn and apply new technologies. Experience with sales methodologies and CRM tools (e.g., Salesforce) Knowledge of data visualization, time-series databases, or data streaming technologies Familiarity with cloud platforms (AWS, GCP, Azure) and modern software development practices Experience mentoring other team members in technical sales approaches Demonstrated success in building and maintaining technical partnerships Background in competitive technical positioning against similar solutions What We’re Looking For: A technical seller who leads with value and can build trusted advisor relationships with customers Someone who excels at identifying customer pain points and mapping them to product capabilities A balanced communicator who can engage effectively with both technical teams and executive stakeholders A strategic thinker who can navigate complex sales cycles and drive technical consensus A team player who collaborates smoothly with sales, product, and engineering to advance opportunities Someone with a consultative approach who can provide tailored solutions rather than generic pitches Location & Travel: You must be willing and able to work from the Los Angeles Metropolitan Area and be onsite Monday through Thursday due to the nature and business needs of the role. Ability to travel 50%+ required. Varies by location and customer needs. Sift headquarters is located in Los Angeles (El Segundo), and we work in a hybrid environment. We work closely with hardware companies building everything from autonomous vehicles to spacecraft, and it's essential to be nearby for site visits and collaboration. Salary range: $135,000 - $175,000 per year. Plus equity and benefits. Eligibility: US Person Required: Must be a U.S. Citizen or Green Card Holder due to ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) compliance requirements.

The Security Engineer – GRC will own Sift’s security posture end to end, blending technical security engineering with governance, risk, and compliance leadership. You will set the standard for how we protect our systems and data, ensuring we are ready to meet and exceed the expectations of aerospace, defense, and enterprise customers. | Candidates should have 5+ years in cybersecurity, product security, or cloud security roles, ideally in high assurance or regulated industries. Proven experience with compliance initiatives and a deep understanding of security principles are essential. | At Sift, we're redefining how modern machines are built, tested, and operated. Our platform gives engineers real time observability over high frequency telemetry, eliminating bottlenecks and enabling faster, more reliable development. Sift was born from our work at SpaceX on Dragon, Falcon, Starlink, and Starship, where scaling telemetry, debugging flight systems, and ensuring mission reliability demanded new infrastructure. Founded by a team from SpaceX, Google, and Palantir, Sift is built for mission critical systems where precision and scalability are non-negotiable. As Sift’s first dedicated Security Engineer, you will not just maintain a security checklist, you will define the posture, architecture, and practices that keep our products and infrastructure secure in the most demanding environments. You will be both hands on and strategic, building controls, automating compliance, and working directly with customers, auditors, and internal teams to inspire confidence in our platform. About the Role The Security Engineer – GRC will own Sift’s security posture end to end, blending technical security engineering with governance, risk, and compliance leadership. You will set the standard for how we protect our systems and data, ensuring we are ready to meet and exceed the expectations of aerospace, defense, and enterprise customers. Your Impact: Set the Standard: Establish a best in class security posture across our product and infrastructure. Make security a competitive advantage, not just a compliance checkbox. Lead Compliance by Design: Translate frameworks like SOC 2, NIST 800 171, CMMC, and FedRAMP into actionable engineering and operational practices. Oversee our Risk Management Framework (RMF) lifecycle and apply security standards across cloud, on prem, and air gapped environments. Engineer the Controls: Architect and deploy security tooling, secure CI/CD pipelines, and observability systems. Implement zero trust networking, encryption, and access control across environments. Enable the Team: Provide approachable, relevant training to engineers and operations teams. Guide secure procurement and use of third party tools and libraries. Earn Trust Externally: Represent Sift’s security posture clearly and credibly to customers, partners, auditors, and government stakeholders. In This Role, You’ll Design, implement, and maintain secure cloud native infrastructure (AWS GovCloud, Kubernetes, OpenShift, on prem, and air gapped) Build secure CI/CD pipelines with integrated scanning and policy enforcement Deploy and manage observability and security tooling (SIEM, EDR, Datadog, ELK, Prometheus, Grafana) Implement zero trust networking, VPNs, and encryption best practices Maintain policies, procedures, and documentation that withstand customer and auditor scrutiny Lead security readiness for customer and government requirements Provide security awareness training for internal teams and be the point of contact for all security questions The Skillset You’ll Bring 5+ years in cybersecurity, product security, or cloud security roles, ideally in high assurance or regulated industries Hands on experience securing AWS and Kubernetes based environments, with strong infrastructure as code practices Proven track record leading or supporting compliance initiatives such as SOC 2, NIST 800 171, CMMC, FedRAMP, or ISO 27001 Deep understanding of network, endpoint, and identity security principles Experience with security tooling and integration into operational workflows Ability to translate compliance requirements into clear, actionable engineering work Strong communication skills, able to represent security posture to technical and non technical audiences Excited to operate as a team of one early on, with the vision to build and lead a security function over time What We’re Looking For Someone motivated by the responsibility of securing technology that supports national security and high stakes engineering programs A builder who can balance pragmatism with rigor in a fast moving startup environment A collaborator who can partner across engineering, operations, and go to market teams to make security part of the culture Someone comfortable engaging directly with customers, auditors, and partners to explain and advocate for our security posture Location: The Sift team is based in El Segundo. We collaborate in person two times per week, Monday and Thursday. We work closely with hardware companies, many of which are based in LA, building everything from autonomous vehicles to spacecraft. As a customer-centric company, being nearby for site visits and collaboration is essential. Sift is open to relocating you to LA. Salary range: $170,000 - $220,000 per year. Plus equity and benefits. Eligibility: US Person Required: Must be a U.S. Citizen or Green Card Holder due to ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) compliance requirements.