{"id":3084548,"url":"https://alion.io/job/open-cosmos-senior-flight-software-engineer","title":"Senior Flight Software Engineer","company":{"id":51554,"name":"Open Cosmos","domain":"open-cosmos.com","url":"https://alion.io/company/open-cosmos","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"A","score":93,"open_postings":27,"ghost_share":0.037,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":177,"computed_at":"2026-10-25T05:49:26Z"}},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Didcot, United Kingdom","Pallini, Greece","Barcelona, Spain"],"countries":["GB","GR","ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":67000,"max_usd":118000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":37},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CCSDS","optional":false},{"name":"CI/CD","optional":false},{"name":"DO-178C","optional":false},{"name":"ECSS","optional":false},{"name":"Rust","optional":false}],"status":"live","first_seen_at":"2025-12-16T07:23:43Z","employer_posted_date":"2025-12-16","last_verified_at":"2026-10-25T14:23:50Z","board_verified":true,"closed_at":null,"days_open":313,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":312},"description":"Aim high, go beyond!\nAt Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on…\nThe CTO division is where Open Cosmos technology comes to life. Covering engineering, product development, and technical innovation, the team designs, builds, and operates the satellites, systems, and platforms that make our missions possible. It’s a highly collaborative environment where ideas become real hardware, software, and data solutions that deliver impact from space.\nWorking in the Flight Software Team\nWorking across the full mission lifecycle, the team designs, implements, and tests software for both onboard and ground systems, ensuring reliability, performance, and scalability across our growing satellite fleet. Collaborating closely with systems, electronics, and mission operations, the team brings together innovation and precision to make every Open Cosmos mission fly.\nWhat You'll Be Doing\nYou’ll take ownership of software design from concept to flight. That means defining architectures, implementing and verifying embedded code, and leading reviews to ensure compliance with space standards.\nYou will:\nLead the design, architecture, and implementation of flight software for new satellite platforms and missions.\n\nDefine software interfaces, patterns, and frameworks for onboard and ground systems using Rust, C, and C++.\n\nOversee system-level integration and testing of flight software across multiple missions.\n\nImplement and review mission-critical features such as fault tolerance, safe modes, and autonomous recovery.\n\nMentor junior engineers, ensuring best practices in coding standards, version control, CI/CD, and documentation.\n\nDrive design and code reviews, ensuring compliance with ECSS, DO-178C, and Open Cosmos software assurance standards.\n\nCollaborate with hardware, systems, and operations teams to optimise performance and ensure mission readiness.\n\nWhat You’ll Bring\nDeep expertise in Rust, with proficiency in C/C++ and embedded systems.\n\nFamiliarity with space protocols (CCSDS, telemetry/telecommand).\n\nStrong grasp of software assurance, fault detection, and recovery design.\n\nExperience with CI/CD, testing automation, and configuration management.\n\nA structured yet creative approach, balancing precision with problem-solving.\n\nFor this role you can be based in Harwell in UK, Barcelona in Spain or Athens, Greece.\nTo apply, you must have the legal right to work in your chosen location.\nPlease submit your application and CV in English.\nWhy Open Cosmos?\nWork at the cutting edge of space technology with customers around the globe.\n\nA mission-driven company making space accessible to help solve real-world challenges.\n\nA diverse, ambitious, and supportive team.","description_format":"text","description_chars":2862,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"},{"name":"Spain","iso":"ES","kind":"country"},{"name":"Greece","iso":"GR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Satellite Manufacturing","Earth Observation","Space Services"],"lifecycle":[{"event":"open","at":"2026-10-22T13:16:21Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; 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