Systems Engineer - Onboard Software (OBSW)

Our Mission At constellr, we're harnessing the power of space to solve one of Earth’s greatest challenges: climate resilience & security in a changing world. Our thermal satellite constellation delivers the most accurate land surface temperature data on the market, equipping commercial players, governments, defence agencies, and global institutions with the thermal intelligence they need to make strategic decisions– from national security and infrastructure to agriculture and climate resilience.  As a fast-scaling company with offices in Brussels, Freiburg, Munich, Washington and Toulouse, our multidisciplinary team of engineers, scientists, and strategists is building the future of space-based Earth observationLocation: Remote or Hybrid - GermanyTeam & Reporting Line: Mission and Space Segment - Reporting to Lead Satellite Systems Your RoleYou will join the constellr Mission & Space Segment team, playing a key role in shaping the onboard software that powers our satellite constellation across its full lifecycle — from early design through to in-orbit operations. This is a hands-on, high-impact role where you will help define how our satellites compute, behave, and evolve in space. Your work will directly influence the reliability, performance, and long-term success of constellr’s mission. You’ll collaborate closely across the business — working day-to-day with internal engineering teams, Product Assurance, Project Management, and Operations, as well as external suppliers. Together, you will help turn mission concepts into robust, flight-ready software systems. In addition to software development, you will contribute to system-level design decisions, support procurement and supplier technical alignment, and help ensure our onboard software is continuously validated, improved, and ready for operation in orbit. Key responsibilities Design, develop, test, and maintain onboard flight software in line with product assurance and safety standards  Work with stakeholders to define, refine, and manage software requirements across all onboard systems  Contribute to the design of onboard software architecture, including support for lab-based and in-orbit operational models  Help define and implement system-level fault detection, isolation, and recovery (FDIR) strategies within onboard software  Support planning and coordination of new software features and upgrades, working closely with external suppliers  Ensure strong configuration management practices across all onboard software components  Define verification strategies and testing approaches to ensure robust and reliable flight software  Take part in verification and validation activities for onboard systems and flight software  Ensure software — both internally developed and supplier-delivered — meets defined requirements and quality standards  Support anomaly resolution and non-conformance investigations related to onboard software  Help define and improve the in-orbit software update process for satellites in the constellr fleet  Contribute to integration and testing activities using Flatsat and other ground-based environments  About YouEssential Experience:We’re looking for someone with strong engineering fundamentals and real-world experience building software for complex, safety-critical or aerospace systems. Degree in Aerospace Engineering, Software Engineering, Computer Science, or a related field  Strong understanding of systems engineering principles and full software development lifecycles in complex technical environments  At least 4 years of experience in software development or software assurance, ideally in aerospace or other safety-critical domains  Experience with embedded software development, including familiarity with low-level hardware interfaces (e.g., CAN, Camera Link, or similar)  Exposure to FPGA-based systems and familiarity with relevant ECSS standards (especially Q-ST-60-02)  Solid grounding in software engineering principles, development methodologies, and lifecycle management tools  Experience with software testing frameworks, tools, and processes  Strong practical experience using Git and working within CI/CD pipelines  Proficiency in Python and C++ Nice to have:These skills would further strengthen your profile, but are not essential: Familiarity with ECSS standards and handbooks, including:  ECSS-E-ST-40C  ECSS-E-HB-40A  ECSS-E-ST-20-04C  ECSS-Q-ST-80C  ECSS-Q-ST-60-03C  ECSS-Q-ST-30-02C  ECSS-E-ST-70-11C  ECSS-E-ST-70-41C  ECSS-E-HB-40-02A  Experience with space communication protocols such as CCSDS and CSP  Strong analytical and structured problem-solving skills  High attention to detail and a strong quality mindset  Confidence in identifying inconsistencies and improving technical standards  Clear communication skills and ability to work across multidisciplinary teams Why Join constellr?Be part of an ambitious mission to launch the world’s first commercial thermal infrared constellationPlay a defining role in scaling a company at the intersection of space, climate, and securityFlexible work setup with remote and hybrid optionsCompetitive compensation, including Virtual Share Option Plan (VSOP) for permanent employeesJoin a team committed to diversity, inclusion, scientific excellence, and real-world impactFind more English Speaking Jobs in Germany on Arbeitnow