Quindar

The role involves building and automating tests while simulating satellite operations. You will also oversee testing operational recovery procedures. | Candidates should have a bachelor's degree in Computer Science or a related field and at least 3 years of professional experience in software testing or related roles. An active US Security Clearance is required. | What You’ll Be Doing Breaking stuff. We need a software engineer to focus on building and automating tests. A top candidate will be able to fix bugs of currently deployed software. This role is a mix of software engineering, DevOps, and testing. The unique part of this role does not lie within writing unit or integration tests but rather mirroring customer use cases – such as testing our satellite tracking, antenna reservation, or satellite command and control services. Your mission will be to simulate hundreds to thousands of satellites running operations while also being chaos monkey so our system can remain resilient. Don’t worry, you do not have to be an aerospace expert – satellites are just flying computers that you see every 90 minutes. Additionally, you will oversee testing operational recovery procedures. Qualifications Tech Skills: Proficiency in Python and familiarity with Typescript / Javascript Experience with End-to-End test suites such as Playwright or Cypress Strong knowledge of containerized applications and serverless architecture Strong knowledge of testing and troubleshooting APIs services, distributed NoSQL and relational databases, caching systems, event-driven and multi-tier architectures Strong knowledge of task automation and CI/CD pipeline building, preferably with GitHub actions but not required Familiarity with Git and GitHub or similar framework for version control Soft Skills: Deep technical analysis and troubleshooting skills Independent self-starter; able to complete projects on time with minimal guidance A high standard for software maintainability, quality, resilience, and performance Strong cross-functional communication between a frontend, backend engineers and product manager Background Qualifications Bachelor’s degree in Computer Science (or related field) 3+ years [professional] experience in software test, backend development, DevOps, or other related role. Professional experience can be replaced with a self-starter who has drive, the technical skills, and is obsessed with their product. Experience supporting validation and verification for complex software systems Active US Security Clearance (Secret Required, TS/SCI Preferred) ITAR REQUIREMENTS To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. Why you'll love working at Quindar We work in a cutting edge industry and you will get the opportunity to be part of a small team with a large direct impact on the success of our customers’ space missions! We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, San Diego, Bozeman, and New York City. Our culture and company is evolving. You will be key in creating the next major or minor version!

Own and execute the product roadmap for the Control product area, collaborating with engineering and design to deliver features, conducting user research, and driving cross-functional alignment. | 3+ years product management experience (preferably aerospace SaaS), strong technical background, excellent communication skills, and ability to work in a fast-paced environment. | We’re looking for a technically-minded Product Manager to join our growing team. You’ll own key parts of the product lifecycle, from discovery and prioritization to launch and iteration, and work closely with engineering, design, marketing, and customer success to deliver products that accelerate our customers’ workflows and drive business impact. Our customers operate large satellite constellations – each one unique – and we provide the unified platform to automate and accelerate their mission operations. The aim of a product manager at Quindar is the right products and features for our customers at the right time – not too early or too late. You should be comfortable diving into technical requirements and system architecture discussions while keeping user empathy and the product vision at the center of your decisions. Key Responsibilities: Strategy & Vision: Own the roadmap for the Control (C2) product area, defining the product requirements, user stories, and key results. Execution: Collaborate with engineering and design teams to deliver innovative features on time User Understanding: Conduct user research, shadow customers, analyze data, and synthesize information from customer-facing teams to develop deep user empathy and inform product decisions. Metrics: Monitor product performance and use metrics to guide iterations on and improvements to your product areas. Leadership: Serve as the go-to expert on the product, the market, the competition, and the customers. Collaboration: Communicate effectively and drive cross-functional alignment with stakeholders at all levels, from engineering teams to executive leadership. Qualifications 3+ years of product management experience, preferably in aerospace or related industries focused on SaaS products Proven ability to manage product roadmaps and deliver features end-to-end Strong technical background with an understanding of software development or agile methodologies (e.g. Scrum, Kanban, CI/CD) Excellent written and verbal communication and organizational skills Bachelor’s degree in business, engineering, Computer Science, or related field (or equivalent practical experience). Ability to work into a fast-paced, constantly evolving environment.

| About the Role As a Gov Contracts Manager at Quindar, you will be responsible for managing government contracts throughout their full lifecycle—ensuring compliance, negotiating terms, supporting proposals, and helping mitigate risk. You’ll partner closely with internal stakeholders (program teams, legal, finance), partners, and external customers to ensure contracts are managed efficiently, transparently, and in line with federal regulations. You are the only person on the team so you must feel comfortable with ambiguity but you will have the ability to lead and grow your team. You’ll be someone who can manage the full process and is VERY organized, detail-oriented, and can move quickly while ensuring high compliance standards. Your work will help set the foundations for scalable growth in the government side of our business. What You’ll Do Manage government contracts (and subcontracts) across different types: fixed-price, cost-reimbursable, time & materials (T&M), other transactional authority, indefinite delivery / indefinite quantity (IDIQ), etc. Support Non-Disclosure Agreements, Teaming Agreements, MOUs, and issuing RFPs Support preparation of contract proposals, including working with teams to define scopes, cost models, and delivery schedules. Negotiate contract terms and modifications. Review contracts and ensure they meet regulatory, legal, and internal policy requirements. Maintain full audit files for each contract: original contracts, modifications, amendments, clarifications, changes, deliverables, payment schedules, etc. Provide summaries and briefings on contract status, obligations, and risks to internal stakeholders (program managers, executives). Lead contract close-out activities. Support subcontracts: negotiating, managing performance, ensuring compliance. Provide contractual guidance and risk mitigation strategies. Collaborate with legal, finance, and relevant technical / program teams. Required Qualifications Minimum of 5 years relevant experience Bachelor’s degree in business administration, contract management, or a related field. Demonstrated experience with full lifecycle contract management under FAR/DFARS Experience managing contracts of multiple types (FFP, CPFF, OTA, T&M, IDIQ, SBIR, etc.). Strong negotiation skills and attention to detail. Ability to operate independently in a fast-paced, ambiguous environment. Strong communication skills (written & verbal), especially for summarizing contract risk & obligations. Preferred Qualifications NCMA Certifications (CFCM, CPCM, CCCM) or other contract management certifications. Experience with export controls, ITAR, or Title 50 (if your work touches sensitive/intelligence domains). Security clearance (or ability to obtain one). Experience with Other Transaction Agreements (OTAs). Graduate degree in relevant field. ITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. Why you'll love working at Quindar We work in a cutting edge industry and you will get the opportunity to be part of a small team with a large direct impact on the success of our customers’ space missions! We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, San Diego, Bozeman, and New York City. Our culture and company is evolving. You will be key in creating the next major or minor version!

| We’re looking for a technically-minded Product Manager to join our growing team. You’ll own key parts of the product lifecycle, from discovery and prioritization to launch and iteration, and work closely with engineering, design, marketing, and customer success to deliver products that accelerate our customers’ workflows and drive business impact. Our customers operate large satellite constellations - each one unique - and we provide the unified platform to automate and accelerate their mission operations. The aim of a product manager at Quindar is the right products and features for our customers at the right time - not too early or too late. You should be comfortable diving into technical requirements and system architecture discussions while keeping user empathy and the product vision at the center of your decisions. Key Responsibilities: Strategy & Vision: Own the roadmap for the Flight Dynamics and Event Management product areas, defining the product requirements, user stories, and key results Execution: Collaborate with engineering and design teams to deliver innovative features on time User Understanding: Conduct user research, shadow customers, analyze data, and synthesize information from customer-facing teams to develop deep user empathy and inform product decisions. Metrics: Monitor product performance and use metrics to guide iterations on and improvements to your product areas. Leadership: Serve as the go-to expert on the product, the market, the competition, and the customers. Collaboration: Communicate effectively and drive cross-functional alignment with stakeholders at all levels, from engineering teams to executive leadership. Qualifications 3+ years of product management experience, preferably in aerospace or related industries focused on SaaS products Proven ability to manage product roadmaps and deliver features end-to-end Strong technical background with an understanding of software development or agile methodologies (e.g. Scrum, Kanban, CI/CD) Excellent written and verbal communication and organizational skills Bachelor’s degree in business, engineering, Computer Science, or related field (or equivalent practical experience). Ability to work into a fast-paced, constantly evolving environment. ITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. Why you'll love working at Quindar We work in a cutting edge industry and you will get the opportunity to be part of a small team with a large direct impact on the success of our customers’ space missions! We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, San Diego, Bozeman, and New York City. Our culture and company is evolving. You will be key in creating the next major or minor version!

| We are seeking a customer-obsessed engineer to enable customer success as our Forward Deployed Product Engineer. Our customers operate satellite missions using our software platform where failure isn’t an option. Your role is to ensure our software meets this demanding need at the edge where it matters most. Equally important, you’ll notice what’s missing, what could be simpler, and what needs to exist that no one has thought of yet - and you’ll turn those observations into product direction. This isn’t just an engineering role, it’s a product role. Deployed in the field, in the ops centers, and alongside our customers. You are a generalist who can move across the full stack, from infrastructure to the frontend, solving problems across systems and using AI as leverage to accelerate development. At Quindar, we believe the future belongs to engineers who can use AI to move faster, build better, and shape the next generation of our products. Key Responsibilities: Configure and deploy our software in customer environments, ensuring reliability and performance across complex workflows. Troubleshoot issues across backend APIs, cloud infrastructure, databases, and the frontend. Travel to customer sites and embed with operations teams, building trusted technical relationships. Prototype products and iterate quickly with live customer data and direct feedback. Act as the voice of the customer in product discussions, translating field insights into roadmap priorities, solutions, and integrations. Partner with Product & Engineering to turn successful prototypes into production code. Develop playbooks for repeatable integrations and maintain clear documentation and training resources. Qualifications: Education: Bachelor’s degree in Computer Science, Aerospace, Engineering, or a related field. Experience: 3+ years of experience in software engineering, with a focus on customer-facing roles. Proven track record of building, deploying, or supporting production software in mission-critical environments. Technical Skills: Proficiency in Python; experience with TypeScript, Java, or similar is a plus. Experience building software with AI tools such as Cursor, Amp, ChatGPT Experience with cloud platforms (AWS, Azure, Google Cloud), databases, and containerization technologies (Docker, Kubernetes). Soft Skills: Excellent communication and interpersonal skills. Strong product sense: ability to question requirements, spot patterns, solve problems for the users. Bias toward action: comfortable shipping prototypes quickly and iterating. Adaptability and curiosity, thriving in ambiguous, fast-changing environments. Certifications: Relevant certifications (e.g., AWS Certified Solutions Architect, Certified Kubernetes Administrator) are a plus. Active US Security Clearance (TS/SCI) strongly preferred ITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. Why you'll love working at Quindar We work in a cutting edge industry and you will get the opportunity to be part of a small team with a large direct impact on the success of our customers’ space missions! We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, San Diego, Bozeman, and New York City. Our culture and company is evolving. You will be key in creating the next major or minor version!

| What You’ll Be Doing 👨‍💻👩‍💻 🛰 🛰 We're looking for a Software Engineering Manager to lead our talented Software Development team. This role requires a balance of hands-on development, team management, and strategic planning. You'll manage personnel across backend and frontend development teams to align our technology with business goals and product vision, working closely with engineering and product leaders. This is a hybrid role with 2 days in office in Irvine, CA, Seattle, WA, or Arvada, CO. Candidates will also be considered in the greater Washington D.C area. We aim to maximize benefits of having in-person collaboration spaces while also working on a flexible schedule with a large amount of remote work! Key Responsibilities Oversee the engineering team's resource management including capacity and velocity, and ensuring optimal balance and function to meet business objectives and product roadmap milestones Manage your team’s involvement in on-call engineering schedules and support structures, ensuring robust incident response protocols Actively participate in the hiring process to grow the team and anticipate future needs Dedicate up to 10 hours per week to coding, maintaining a strong connection with the team's technical work and challenges. Prioritize the professional development and career growth of team members, providing mentorship and identifying opportunities for advancement. Collaborate with engineering leaders to identify gaps or disconnects between teams and promote proactive architecting across Quindar’s engineering products Collaborate with both external and internal partners, communicate plans clearly to all parties, and lead teams towards success Coordinate with Product Managers on requirements and prioritization Contribute to both engineering and product documentation Strong organizational skills, with the ability to manage multiple projects and deadlines effectively. Host post-mortems and implement corrective actions Background Qualifications Ability to code and review code in various programming languages relevant to our stack. Experience with Agile methodologies and an understanding of software development life cycles. A solid technical background with experience in backend and frontend development, as well as quality assurance practices. Proven experience managing a team of software engineers and a track record of successful project delivery. Strong leadership skills with the ability to inspire and motivate in a fast-paced environment. Excellent communication skills, with the ability to articulate technical concepts to non-technical stakeholders. Why you'll love working at Quindar We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, and San Diego. Our culture and company is evolving. You will be key in creating the next major or minor version!

| What You’ll Be Doing 👨‍💻👩‍💻 🛰 🛰 Architect, automate, test, deploy, and maintain a well-designed and highly available software infrastructure deployed in Kubernetes within cloud or on-premises environments. Implement practices to enable DevSecOps with a focus on security and compliance for SOC2, NIST 800-171, and FedRAMP Medium controls. You will own the Kubernetes deployment strategy and work with the software development team to ensure a successful architecture and software product. You will help develop secure ingress and egress to customer and vendor data centers in a multi and single-tenant environment. As the team is developing, you will also provide best practices for availability, latency, and performance of services. You will spend time working directly with Quindar’s customers to ensure successful architecture deployment to both cloud environments and offline or secure facilities while ensuring alignment to a clean infrastructure vision. This is a hybrid role with 2-3 days in-office in Irvine, CA or Arvada, CO. We aim to maximize benefits of having in-person collaboration spaces while also working on a flexible schedule with a large amount of remote work! Tech Skills: Expertise managing Kubernetes-based architecture and providing platform infrastructure in a production environment Strong proficiency developing Infrastructure as Code (IAC) solutions using Terraform or alternative tools Proficiency in Python and experience working with software teams developing distributed microservice software capabilities Working knowledge of monitoring tools such as New Relic, DataDog, Splunk, AWS CloudWatch or similar Familiarity with cloud services in AWS (preferred) / Azure / GCP and ability to make trades on cloud native vs self-hosted software capabilities Working knowledge of monitoring tools such as New Relic, DataDog, Splunk, AWS CloudWatch or similar Understanding of networking using VPN’s, NLB/ALB’s, HTTPS, TLS, and CDN Strong knowledge of Kubernetes, containerized applications, and serverless architecture Strong knowledge of designing, analyzing, and troubleshooting APIs services, distributed NoSQL and relational databases, caching systems, event-driven and multi-tier architectures Strong knowledge of task automation and CI/CD pipeline building, preferably with GitHub actions but not required Understanding of Unix/Linux operating systems Knowledge of cloud security best practices and cost-effective cloud architecture Use of identity and access management via Auth0 or Okta Familiarity with Git and GitHub or similar framework for version control Soft Skills: Deep technical analysis and troubleshooting skills Independent self-starter; able to complete projects on time with minimal guidance A high standard for software maintainability, quality, resilience, and performance Strong communications skills and ability to engage effectively across development teams, program management, and customers Background Qualifications: Bachelor’s degree in Computer Science (or related field) 3+ years of professional experience as a reliability, systems, DevOps, infrastructure, or platform engineer Active U.S. Security Clearance (TS/SCI) Why you'll love working at Quindar We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, and San Diego. Our culture and company is evolving. You will be key in creating the next major or minor version!

| What You’ll Be Doing 👨‍💻👩‍💻 🛰 🛰 You will be responsible for developing ground satellite operations software using Python and AWS services. Don't worry, you do not need to be an expert in satellites or understand space! Satellites are just flying servers you can connect to every 90 minutes but we connect to hundreds of them. You will primarily be responsible for supporting mission unique software development across backend and frontend in support of the U.S. government, but you will also contribute to Quindar’s core product development. You will develop APIs, integrate with various AWS services such as EC2, S3, Lambda, RDS, Fargate, and EKS along with focusing on scalability, security, cost, and performance of the software. You will collaborate with cross-functional teams, including satellite operators, customers, and other software engineers to understand requirements, implement new features, and troubleshoot issues. Your strong knowledge of AWS services and best practices will enable you to optimize resource utilization and automate processes, ultimately contributing to the efficient and reliable operations of thousands of satellites. This is a hybrid role with 2 days in office in Irvine, CA or Arvada, CO. We aim to maximize benefits of having in-person collaboration spaces while also working on a flexible schedule with a large amount of remote work! Tech Skills Proficiency in Python, GraphQL, Docker, and Terraform (or relevant IaC tools) Familiarity with Javascript and experience either developing full stack / frontend software or working closely to integrate with frontend developers Strong knowledge of designing, analyzing, and troubleshooting APIs services, distributed NoSQL and relational databases, caching systems, event-driven and multi-tier architectures Experience working with React components in Typescript and frameworks like Next.js, Refine (or Blitz.js / RedwoodJS) Strong knowledge of containerized applications and serverless architecture Experience with Kubernetes and preferred experience with AWS services such as Lambda, ECS, EKS, CloudWatch, S3, EFS/EBS, EC2, and RDS Strong knowledge of task automation and CI/CD pipeline building, preferably with GitHub actions but not required Familiarity with Git and GitLab or similar framework for version control Soft Skills Deep technical analysis and troubleshooting skills Independent self-starter; able to complete projects on time with minimal guidance A high standard for software maintainability, quality, resilience, and performance Strong cross-functional communication between frontend, backend engineers and product managers Background Qualifications Bachelor’s degree in Computer Science (or related field) 4+ years [professional] experience in backend development, DevOps, or other related role. Professional experience can be replaced with a self-starter who has drive, the technical skills, and is obsessed with their product. Active US Security Clearance (TS/SCI) Why you'll love working at Quindar We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, and San Diego. Our culture and company is evolving. You will be key in creating the next major or minor version!

| What You’ll Be Doing 👨‍💻👩‍💻 🛰 🛰 You will be responsible for developing ground satellite operations software using Python and AWS services. Don't worry, you do not need to be an expert in satellites or understand space! Satellites are just flying servers you can connect to every 90 minutes but we connect to hundreds of them. You will develop Python microservices deployed either to the cloud or to on-premise environments with a focus on scalability, security, cost, and performance of the software. You collaborate with cross-functional teams, including satellite operators and other software engineers, to understand requirements, implement new features, and troubleshoot issues. Your strong knowledge of Kubernetes, AWS services, and software development best practices will enable you to optimize resource utilization and automate processes, ultimately contributing to the efficient and reliable operations of thousands of satellites. You will primarily be responsible for developing backend software capabilities, but the ideal candidate is able to contribute to a combination of backend software development, DevSecOps and CI/CD tooling, and software architecture design and maintenance. This is a hybrid role with 2 days in office in Irvine, Seattle, or Arvada. Candidates will also be considered in the greater Washington D.C area. We aim to maximize benefits of having in-person collaboration spaces while also working on a flexible schedule with a large amount of remote work! Tech Skills Proficiency in Python and Java or C++ Experience deploying and maintaining software in Kubernetes Experience with AWS services such as Lambda, ECS, EKS, CloudWatch, S3, EFS/EBS, EC2, and RDS Strong knowledge of containerized applications and serverless architecture Strong knowledge of designing, analyzing, and troubleshooting APIs services, distributed NoSQL and relational databases, caching systems, event-driven and multi-tier architectures Strong knowledge of task automation and CI/CD pipeline building with GitHub or GitLab Familiarity with Git and GitLab or similar framework for version control Soft Skills Deep technical analysis and troubleshooting skills Independent self-starter; able to complete projects on time with minimal guidance A high standard for software maintainability, quality, resilience, and performance Strong cross-functional communication between frontend, backend engineers and product managers Background Qualifications Bachelor’s degree in Computer Science (or related field) 4+ years [professional] experience in backend development, DevOps, or other related role. Professional experience can be replaced with a self-starter who has drive, the technical skills, and is obsessed with their product. Active (preferred) or previously held U.S. Security Clearance (TS/SCI) Why you'll love working at Quindar We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays. Mental health is just as important as physical so we provide quarterly health & wellness benefits. Comprehensive health insurance for you and your family with 100% coverage for employees. We encourage employees to save for retirement and provide 4% 401(k) matching. Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, and San Diego. Our culture and company is evolving. You will be key in creating the next major or minor version!