{"id":30002,"url":"https://alion.io/job/sopra-steria-software-and-modelling-engineer-space-engineering","title":"Software and Modelling Engineer - Space Engineering","company":{"id":52881,"name":"Sopra Steria","domain":"soprasteria.com","url":"https://alion.io/company/soprasteria","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":368,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":24,"computed_at":"2026-10-19T05:45:15Z"}},"role":"Backend","role_family":"Backend","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":["Stevenage, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":65000,"max_usd":123000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":125},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"Linux","optional":false},{"name":"Red Hat","optional":false},{"name":"UML","optional":false}],"status":"live","first_seen_at":"2026-07-31T08:53:33Z","employer_posted_date":"2026-07-31","last_verified_at":"2026-10-19T17:34:25Z","board_verified":true,"closed_at":null,"days_open":80,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":80},"description":"CS GROUP, together with HE Space and Sopra Steria, has been successfully providing digital end-to-end systems and engineering services for more than 40 years. With over 2000 employees worldwide, we combine advanced and unique skills in both information technology and space data engineering. We combine entrepreneurial agility with cutting-edge technological expertise. CS GROUP is a leading provider of operational systems and an important and trusted long-term partner for space and defence organisations. At CS GROUP, we are driven by innovation and we value our most important asset: our people.\n As part of the On-board Software and Functional Verification (FV) team, you will contribute to the development of software for the ESA Vigil satellite programme, supporting one of Europe's flagship space missions.\nWorking in a Continuous Deployment environment, you will be involved in the design, implementation, integration and verification of on-board software, collaborating closely with multidisciplinary engineering teams to ensure the successful delivery of high-quality software solutions.\nYour responsibilities will include:\nDesigning, developing and maintaining on-board software using C++;\nDeveloping and maintaining software models and simulation environments;\nSupporting hardware-in-the-loop (HIL) design, integration and testing activities;\nDebugging and troubleshooting real-time software in Linux environments;\nContributing to Continuous Integration and Continuous Deployment (CI/CD) pipelines;\nDesigning and implementing multi-process and multi-threaded software applications;\nDeveloping and executing software verification activities, including unit and integration testing;\nApplying software engineering best practices, object-oriented design principles and design patterns;\nProducing and maintaining technical documentation in accordance with ECSS standards;\nWorking closely with systems, avionics and verification engineers throughout the software development lifecycle;\nCommunicating technical concepts effectively to both technical and non-technical stakeholders.\n You will have the following qualifications and relevant experience:\nUniversity degree in Computer Science, Software Engineering, Aerospace Engineering or a related technical discipline;\nAt least 4 years of industrial experience in software engineering (5+ years preferred);\nStrong software design and development experience using C++;\nGood working knowledge of Java (primarily for software testing activities);\nExperience designing and debugging real-time software in Linux (RedHat) environments;\nExperience with Hardware-in-the-Loop (HIL) systems;\nExperience working with Continuous Integration and Continuous Deployment (CI/CD) environments;\nStrong understanding of multi-process and multi-threaded software architectures;\nExperience with software testing methodologies and unit testing frameworks;\nKnowledge of Object-Oriented Analysis and Design (OOAD) using UML or similar modelling techniques;\nGood understanding of the complete Software Development Life Cycle (SDLC);\nKnowledge of software design patterns and modern coding best practices;\nFamiliarity with software development frameworks, tools and utilities;\nExperience with machine-to-machine communication protocols;\nExcellent communication and presentation skills in English.\nThe following experience would be considered a strong advantage:\nExperience with spacecraft avionics systems;\nKnowledge of ECSS software standards, particularly ECSS PUS;\nExperience with SpaceWire, MIL-STD-1553 and CAN Bus communication protocols;\nPrevious experience working on ESA or other space programmes.\n This role is based in Stevenage, United Kingdom\nThe position requires full-time onsite presence (4 days per week onsite, 1 day remote).\nIf you believe you have what it takes for this position, please send your CV (in English and in Word or PDF format) to Andrés Izquierdo by clicking on the ‘Apply for this job’ button and quoting job reference.\nAn exciting and dynamic international working environment awaits you!\nLast apply date: 31/08/2026!","description_format":"text","description_chars":4082,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","IT Outsourcing & Dedicated Teams","Systems Integrators"],"lifecycle":[{"event":"open","at":"2026-07-31T08:53:33Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Skilled Worker, Senior or Specialist Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker; 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