Flight Software Engineer - Space Systems

At Axient Systems we are building sovereign Dutch space capability. From Delft, at the heart of the Dutch aerospace ecosystem, we develop advanced satellite systems for the Netherlands Ministry of Defence and other government and commercial customers. Our work spans mission integration, earth observation, secure communications, and space systems engineering. We are responsible for mission integration on PAMI-1, the satellite that will give the Netherlands its own optical space capability. We are looking for a Flight Software Engineer to help design, develop, and verify the on-board software that routes and processes data on PAMI-1. The Role You help develop and verify satellite on-board software for data routing and processing. This is flight software: it has to be right, it has to run within tight hardware constraints, and it has to survive an environment where you cannot simply patch it once it is in orbit. You implement and test well-defined parts of the software, working to an architecture set together with the senior engineers. You will work at the interface between software, systems, and hardware, and you will take on more ownership as you grow into the role. On a programme of this size, good work is visible and your contribution matters from day one. You will report to the Lead Software Engineer. Key Responsibilities Code. Develop code that integrates several complex interfaces and routes data between them.Software architecture. Contribute to the software architecture under the guidance of senior engineers.Systems engineering. Support the systems engineering process of requirements generation and functional flow-down.Testing and validation. Create unit tests, perform system-level testing, and support hardware-in-the-loop setups to verify software functionality.Maintain and document. Write clean, maintainable code and produce clear technical documentation to support design reviews and system audits.Collaborate. Work closely with the electrical, mechanical, and systems engineering teams to deliver integrated solutions. What You Bring Essential At least 2 years of experience in embedded / low-level software development or a strong track record from study and internshipsAn understanding of real-time, or near-real-time, applicationsA degree in computer science, electrical engineering, embedded systems, or a comparable fieldProficiency in C, C++, and PythonA working understanding of UART and EthernetExposure to test-driven development, CI/CD workflows, and GitFluent EnglishOn-site work in Delft, limited hybrid working possible Desirable Experience with spacecraft flight software, or comparable vehicle software requiring a high level of reliabilityExperience with real-time Linux and RTOSFamiliarity with networking technologies such as TCP/IP, UDP/IP, and FTPCAN-bus, I2C, SPI, SpaceWireExperience with CCSDS and ECSS space protocols such as CFDP and PUSFamiliarity with MISRA / AUTOSAR guidelines and/or ECSS coding standardsExperience with encryption and securityExperience with RustWorking proficiency in Dutch What We Offer A role at the heart of a national space programme, working on flight‑critical software that must perform flawlessly when it matters most. In an organisation small enough that your standards shape the organisation itself, you’ll have direct influence on how our flight software is conceived, built, and assured. We offer a market‑aligned salary and benefits that reflect the significance of the role, along with clear opportunities for growth as our Dutch organisation continues to scale. Particularities A Certificate of Conduct (VOG) is required upon commencement of employment. Interested? Apply via the vacancy on LinkedIn or through the registration form on our website. In your application, please include a brief description of one piece of flight‑ or safety‑critical software you personally developed: the reliability constraint that shaped its design, and one defect that reached integration or test, how you identified it, and what you changed as a result. Applications without this description will not be reviewed.