Alexander Associates

Senior Spacecraft Systems Engineer Oxfordshire Full-Time Competitive Salary We re working with a growing space engineering organisation delivering complex spacecraft missions across commercial and institutional programmes. They re looking for a Senior Spacecraft Systems Engineer to lead mission definition, system architecture, and verification across the full spacecraft lifecycle from concept through to integration and validation. The Role Define mission CONOPS and derive system requirements Lead mission analysis and spacecraft modelling Manage system budgets (mass, power, data, fuel) Deliver mission-level V&V including FMECA, FTA, FDIR Support feasibility studies and bid activities Coordinate across subsystem teams (GNC, propulsion, comms, software) Support integration and test activities What You ll Need Degree in Aerospace/Systems Engineering (or similar) 5+ years space industry experience Strong background in system architecture and full project lifecycle Experience with spacecraft subsystems and mission-level V&V Understanding of AIT and end-of-life/debris considerations

Flight Software Engineer Location: Oxfordshire Salary: Competitive (dependent on experience) We are working with an innovative space technology company based in Oxford who are developing advanced in-orbit systems to support next-generation space missions. As part of continued programme growth, they are looking to appoint a Flight Software Engineer to develop embedded flight software and firmware supporting upcoming missions. This is a critical role focused on delivering reliable, mission-ready software that performs essential functions in orbit. This opportunity would suit someone who thrives in a hands-on engineering environment and enjoys taking software from architecture through to validation and deployment on real hardware. The Role You will be responsible for developing embedded flight software and firmware across the full product lifecycle from early architecture and design through to testing and mission support. Key responsibilities include: Developing critical embedded flight software Architecting, planning, and implementing firmware and software solutions aligned with mission CONOPS Implementing and testing software to ensure compliance with system requirements Supporting overall system design decisions from a flight software perspective Leading software tasks within Hardware-in-the-Loop (HITL) testing campaigns Supporting internal software tool development for mission analysis and testing Producing clear documentation covering structure and functionality of flight software Interfacing directly with customers (government and commercial) Managing software tasks and coordinating with contractors and suppliers What They re Looking For Bachelor s degree in Electrical, Software, Aerospace Engineering (or similar) with 4+ years of experience OR Master s degree with 3+ years of experience Demonstrated experience in embedded flight software development, including: Bare-metal C programming Development on ARM Cortex processors Experience with RTOS or Embedded Linux Low-level driver development (SPI, UART, I2C, CAN, etc.) Hardware integration including actuators and sensors Hardware-in-the-Loop development and testing Experience working in multidisciplinary engineering teams Strong written and verbal communication skills Desirable Experience Experience leading or mentoring software engineers Experience writing software for radiation environments Background in startup or agile development environments Experience with MATLAB, Python, Linux Familiarity with Git, Jira, Confluence Knowledge of spacecraft command and telemetry systems

Lead Space Systems Engineer Harwell, Oxfordshire Full-Time Competitive Salary We re working with a cutting-edge space technology company developing advanced spacecraft and in-orbit systems. As they scale, they re looking for a Lead Space Systems Engineer to take ownership of system architecture, integration, and mission delivery. This is a senior, high-impact role for someone who enjoys leading complex spacecraft programmes from concept through to flight. The Role Own end-to-end spacecraft system architecture Lead requirements development, trade studies, and interface definitions Drive system-level reviews (SRR, PDR, CDR, FRR) Oversee integration, environmental testing, and verification Lead anomaly resolution and technical decision-making Coordinate multidisciplinary teams (propulsion, GNC, avionics, thermal, structures, ops) Support future mission concepts and proposals What You ll Need 7+ years experience in spacecraft systems engineering Experience across multiple spacecraft subsystems Strong background in requirements, V&V, and flight hardware integration Solid understanding of the full mission lifecycle Confident communicator and technical leader