{"id":3405726,"url":"https://alion.io/job/space-systems-integration-senior-mbse-engineer","title":"Senior MBSE Engineer","company":{"id":16333,"name":"Space Systems Integration","domain":"ssi.space","url":"https://alion.io/company/ssi","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":91,"open_postings":22,"ghost_share":0,"stale_share":0.364,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["El Segundo, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":210000,"max":255000,"currency":"USD","period":"year","gross":null,"usd_annual":255000},"salary_estimate":null,"experience_years_min":14,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cameo Systems Modeler","optional":false},{"name":"DoDAF","optional":false},{"name":"MBSE","optional":false},{"name":"SysML","optional":false}],"status":"live","first_seen_at":"2026-10-27T16:28:56Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-29T13:18:10Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"SSI is seeking a Senior MBSE Engineer for a role in El Segundo, CA.\nRole and Responsibilities include:\nProvide leadership advice on mission engineering strategies for SoS architectures and strategic messaging to key operational and government stakeholders.\nProvide systems engineering and mission architecting support.\nTechnical requirements generation/review/compliance supporting space systems technical review and assessments.\nDevelop mitigation plans for discovered and recorded Risks, Issues, and Gaps (RIGs) to provide senior leadership the information needed to close RIGs and vulnerabilities.\nIdentify activities and functions critical to mission thread development, deriving and modeling the as-is and to-be functional and physical architectures.\nProvide program and technical insight to the modeling and analysis staff regarding system architecture designs, interfaces, schedule, and assumptions.\nDrive integration and utilization of Digital Engineering (DE) practices of Model-Based Systems Engineering (MBSE) and Modeling, Simulation, & Analysis (MS&A) to include the conversion of legacy Systems Engineering content into digital formats.\nRequired Qualifications:\nBachelor of Science in Engineering or a relevant discipline with 14+ years of experience with:\nSystems engineering and architecting for major systems acquisitions utilizing Digital Engineering methodologies.\nModel-Based Systems Engineering (MBSE) methods and descriptive modeling frameworks such as SysML.Experience in Cameo Systems Architect or SparX Enterprise Architect.\nUnderstanding of DoDAF views for system of system architectures and plans.\nModeling Simulation and Analysis (MS&A) experience in parametric and physics-based assessment of systems.\nActive TS clearance with in-scope T5/SSBI is required, along with SCI eligibility and participation in Continuous Evaluation.\nMust meet all requirements for SCI and SAP access and be willing to undergo a polygraph examination.\n\nDesired Qualifications:\nMaster’s Degree, 12+ years of relevant experience is preferred.\nFluency in Department of War architectural frameworks (e.g., DoDAF).\nMilitary Space Operations with an emphasis in Space Domain Awareness and Combat Power programs and capabilities.\nExperience working in a development environment and/or U.S. Government weapons system program office.\nLed the development of a Digital Engineering Thread utilizing MBSE and MS&A artifacts, leading to a validated and verified system architecture.\nProfessional certification (e.g., Professional Engineer, INCOSE CSEP, etc.).\nKnowledge of Digital Engineering and operational analysis processes and tools, as well as their application in producing data-driven analysis results.","description_format":"text","description_chars":2702,"description_truncated":false,"requirements":{"experience_years_min":14,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Space Services","Engineering 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