{"id":1498755,"url":"https://alion.io/job/espace-real-estate-constellation-architecture-design-simulation-engineer","title":"Constellation Architecture Design & Simulation Engineer","company":{"id":2438005,"name":"E-Space","domain":"e-space.com","url":"https://alion.io/company/e-space-com","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"C","score":68,"open_postings":103,"ghost_share":0.447,"stale_share":0,"repost_share":0.039,"time_to_fill_p50_days":61,"computed_at":"2026-10-24T06:02:35Z"}},"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":["Santa Clara, United States","Arlington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"GMAT","optional":false},{"name":"STK","optional":false}],"status":"live","first_seen_at":"2026-09-29T17:30:28Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-24T05:33:22Z","board_verified":true,"closed_at":null,"days_open":24,"trust":{"level":"ok","repost_count":1,"flags":["company_stale"],"days_open":24},"description":"As a Constellation Modeling and Simulations Architect, you will be a critical member of the Autonomous Flight Systems and Simulations Team building highly accurate models of the spacecraft and space environments. You will enjoy large complex problems with multi-agent contributions to determine specific and probabilistic results. Your background will include either a first principles understanding of spacecraft guidance navigation and control mechanisms and forces, or radio frequency engineering and modeling.\nKey Responsibilities\nAs the technical authority for constellation design, you will:\nLead the development and maintenance of the overall constellation architecture and design baseline.\nDefine and freeze constellation geometry to support downstream spacecraft procurement and program execution.\nDevelop and validate end-to-end link budgets across both Mobile Satellite Services (MSS) and Fixed Satellite Services (FSS), considering environmental effects including rain fade and Doppler.\nPerform coverage analysis and network performance simulations to optimize service availability and capacity.\nConduct interference and compatibility studies, including Equivalent Power Flux Density (EPFD) modelling to support regulatory compliance.\nProduce technical documentation supporting regulatory filings, constellation deployment planning and launch strategy.\nDevelop long-term capacity modelling and network growth strategies.\nCollaborate with systems engineering, payload, RF, regulatory and commercial teams to optimize overall network performance.\nProvide technical leadership for constellation design activities throughout the program lifecycle.\nBasic Qualifications\n5+ years’ experience in LEO and/or MEO satellite constellation design.\nExtensive hands-on experience using tools such as STK, GMAT, FreeFlyer or equivalent orbital analysis and simulation software.\nProven experience developing and closing satellite communications link budgets across MSS and/or FSS systems.\nStrong understanding of orbital mechanics, constellation optimization and satellite network performance modelling.\nDirect experience supporting ITU coordination activities, including EPFD analysis and interference studies.\nExperience producing technical documentation supporting satellite system design and regulatory submissions.\nAbility to communicate complex technical concepts to multidisciplinary engineering teams and senior stakeholders.\nPostgraduate qualifications in Aerospace Engineering, Electrical Engineering, Applied Physics or a related technical discipline.\nPreferred Qualifications\nExperience working on Non-Terrestrial Networks (NTN) or next-generation satellite communications systems.\nTechnical publications or recognized expertise in orbital mechanics, interference analysis or satellite communications.\nExperience supporting large-scale commercial satellite constellation programs.","description_format":"text","description_chars":2888,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Architecture","Space & Aerospace","Satellite 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