{"id":3503373,"url":"https://alion.io/job/rtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems","title":"Snr Principal Systems Engineer - Modelling & Simulation– Unmanned Systems","company":{"id":1162,"name":"RTX","domain":"rtx.com","url":"https://alion.io/company/raytheon-technologies","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":82,"open_postings":505,"ghost_share":0,"stale_share":0.699,"repost_share":0.02,"time_to_fill_p50_days":26,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Winnersh, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":69000,"max_usd":115000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":109},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"DO-178C","optional":false},{"name":"FMEA","optional":false},{"name":"Link 16","optional":false},{"name":"MATLAB","optional":false},{"name":"Simulink","optional":false},{"name":"StateFlow","optional":false},{"name":"Verification & Validation","optional":false},{"name":"Kotlin","optional":true}],"status":"live","first_seen_at":"2026-05-08T00:00:00Z","employer_posted_date":"2026-05-08","last_verified_at":"2026-11-01T14:43:00Z","board_verified":true,"closed_at":null,"days_open":177,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":177},"description":"Date Posted:\n2026-05-08Country:\nUnited KingdomLocation:\nWinnersh, WokinghamPosition Role Type:\nHybridCollins Aerospace, an RTX business\nLocation: Winnersh, UK\nHelp shape the future of unmanned systems\nAt Collins Aerospace, we are advancing technologies that help redefine aerospace and defense. From intelligent systems to complex mission capability, our teams work on solutions that protect, connect and support customers operating in some of the most demanding environments in the world.\nWe are looking for an experienced Snr Principal Systems Engineer - Modelling & Simulation- Unmanned Systems to play a key technical leadership role in the design, development, test and demonstration of complex unmanned air systems.\nThis is a role for someone who enjoys working at the sharp edge of engineering: building high-fidelity models, developing flight-critical control laws, validating systems through SIL/HIL testing, supporting field trials, and mentoring the next generation of modelling and simulation engineers.\nYou will work across the full lifecycle, from customer requirements and concept development through to simulation, embedded implementation, Iron Bird testing, flight trials and in-field demonstrations.\nWhat You Will Do\nYou will lead modelling, simulation and control activities for complex unmanned systems, helping to turn mission concepts into validated, field-ready capability.\nIn this role, you will:\nDesign high-fidelity 6-DOF digital models of complex unmanned systems, accurately representing vehicle dynamics, behaviours and mission performance.\nUse Model-Based Systems Engineering to inform, drive and verify system design decisions.\nDevelop, test, tune and deploy flight-critical control laws and autonomy functions for unmanned aircraft.\nCreate resilient trajectory guidance, mission tasking, and GNSS-denied navigation algorithms.\nBuild simulation environments that bring together vehicle dynamics, control laws, payloads, sensors, communications and navigation models.\nSupport Software-in-the-Loop, Hardware-in-the-Loop and full-scale aircraft systems testbed activity, including Iron Bird development and validation.\nImplement and compile control and autonomy code onto embedded systems.\nDefine and integrate onboard data communication interfaces, including CAN bus, serial and Ethernet networks.\nDevelop human control interfaces for test pilots and ground operators managing unmanned systems.\nSupport experimental flight testing, including test procedures, live control tuning, post-flight analysis and real-time data review.\nDesign rapid analysis tools and scripts to process UAS flight logs during trials and debugging activity.\nDiagnose, fault-find and repair complex UAS onboard control systems in both lab and field environments.\nReview and contribute to systems architectures, CONOPS and simulation-based test scenarios.\nIdentify technical risks and develop practical mitigation plans.\nSupport the use of export-controlled technologies, including designs subject to US ITAR controls.\nAct as a technical mentor, guiding junior engineers through design, verification, validation, system test and demonstration activities.\nWhat You Will Learn\nThis role offers the opportunity to work on advanced unmanned systems in an environment where modelling, simulation, control law design and field validation come together.\nYou will gain exposure to:\nComplex UAS architecture and mission system development.\nAdvanced autonomy and guidance approaches for contested or GNSS-denied environments.\nMulti-asset CONOPS simulation and representative vignette testing.\nEmbedded deployment of control and autonomy code.\nFlight test campaigns, field demonstrations and rapid engineering support in live environments.\nAerospace and defense engineering governance, including safety, certification, export control and customer requirements.\nLeadership of specialist engineering teams delivering high-quality technical output to time, cost and quality expectations.\nQualifications You Must Have\nWe are looking for someone with deep technical experience in modelling, simulation, flight controls or unmanned systems engineering.\nYou will typically bring:\nA degree in Science, Technology, Engineering or Mathematics, or equivalent experience.\nSignificant relevant experience in complex aerospace, defense, robotics, autonomy or unmanned systems environments.\nExpert capability in MATLAB and Simulink.\nStrong experience using Stateflow for state-machine driven system design.\nExperience using MATLAB/Simulink projects, including requirements, version control, data dictionaries, test harnesses and model validation.\nExperience with MATLAB/Simulink code generation for embedded processor deployment.\nExperience integrating and validating UAV flight control computers, autopilots or flight management systems.\nExperience creating automated scripts for test data processing and analysis.\nExperience developing simulation model test harnesses for verification and validation against requirements.\nExperience with SIL and HIL test design linked to 6-DOF dynamic models.\nExperience with complex unmanned control systems architecture design from requirements and CONOPS.\nExperience defining and implementing onboard system data interfaces such as CAN bus, serial connections and Ethernet networks.\nExperience with FMEA and FHA for unmanned systems, including redundancy and safety-related design considerations.\nExperience integrating, testing or demonstrating UAS payloads, sensors, comms, RF systems or datalink systems.\nStrong stakeholder-facing skills, with the ability to work well under pressure and maintain team cohesion.\nThe ability to obtain SC security clearance.\nA valid passport and ability to travel internationally where required.\nQualifications We Value\nIt would be useful, though not essential, if you also have experience in some of the following areas:\nC/C++ coding for APIs and embedded applications.\nA-PNT sensor integration for stabilisation and control.\nGNSS-denied or contested guidance and navigation algorithms.\nExperimental flight testing, in-flight control tuning and flight dynamics system identification.\nCFD outputs and their application to 6-DOF aircraft models.\nAirborne unmanned systems avionics, sensors and payload integration.\nField engineering support for remote UAS deployment, diagnostics and repairs.\nUAV flight test campaign planning, logistics and demonstration trials.\nUAS deployment regulatory compliance, including Operational Safety Case documentation.\nGround Control Station operation or UAV safety pilot competency.\nCommunication systems, datalinks, networks and protocols, including Link 16.\nAerospace certification processes, standards and regulations such as DO-178B/C.\nUK MOD customer environments and procurement processes.\nModelling and simulation team leadership or technical mentoring experience.\nThe Person We Are Looking For\nYou will be someone who enjoys solving difficult engineering problems where simulation, control, autonomy and real-world testing meet.\nYou are likely to be:\nTechnically curious and comfortable working with complex systems.\nConfident moving between modelling, embedded implementation, lab testing and field trials.\nA calm problem-solver when systems behave unexpectedly.\nComfortable mentoring others and helping junior engineers grow.\nAble to communicate technical risk clearly to customers, leaders and project teams.\nPractical, hands-on and delivery-focused.\nMotivated by seeing your work tested, proven and deployed in real-world environments.\nWhy Join Collins Aerospace?\nAt Collins Aerospace, your work will contribute to technologies that support safety, security and mission success across the aerospace and defense sector.\nYou will join a team where advanced engineering is not just theoretical. Models become simulations. Simulations become testbeds. Testbeds become field trials. And field trials become real-world capability.\nThis is an opportunity to lead, mentor and deliver technical work that sits right at the frontier of unmanned systems engineering.\nOur Benefits\nCompetitive Compensation Package\n\n25 days Annual Leave + Public Holidays + option to buy / sell up to 5 days per year\n\nGenerous Employer Contribution Pension Scheme with 2:1 matched contributions up to 10%\n\nPrivate Medical Insurance\n\nHealth & Wellbeing Cash Plan - (dental/optical/therapy/chiropody/health screening)\n\nLife Assurance & Group Income protection scheme participation\n\nProfessional Development & Growth\n\nSupport with professional fees\n\nEmployee Assistance Program (EAP)\n\nEmployee Discounts & Flexible Benefits Platform\n\nEmployee Recognition & Referral Bonuses\n\nand much more!\n\nApply Today\nIf you are an experienced modelling, simulation or flight controls engineer with a passion for unmanned systems, autonomy and real-world engineering delivery, we would like to hear from you.\nJoin Collins Aerospace and help shape the future of aerospace and defense.\nRTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.\nPrivacy Policy and Terms:\nClick on this link to read the Policy and Terms","description_format":"text","description_chars":9308,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Annual leave","Health insurance","Professional development"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Missiles","Air Defense","Defense Manufacturing","Avionics & Flight Control"],"lifecycle":[{"event":"open","at":"2026-10-30T04:44:38Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.277,"p_room":0.28,"age_days":177,"expected_fill_days":26,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/rtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems","json_url":"https://alion.io/job/rtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems.json","meta":{"generated_at":"2026-11-01T15:31:42Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":23840,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":1162},"rest":"https://alion.io/mcp/rest/get_company?id=1162"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Frtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Frtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/rtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frtx-snr-principal-systems-engineer-modelling-simulation-unmanned-systems"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3503373}},{"tool":"search_jobs","arguments":{"company":"rtx.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3503373},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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