{"id":2228356,"url":"https://alion.io/job/saic-senior-astrodynamics-engineer","title":"Senior Astrodynamics Engineer","company":{"id":58788,"name":"SAIC","domain":"saic.com","url":"https://alion.io/company/saic","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":83,"open_postings":73,"ghost_share":0,"stale_share":0.863,"repost_share":0,"time_to_fill_p50_days":19,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Aerospace","role_family":"Aerospace","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chantilly, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":132000,"max_usd":237000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":265},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"HPC","optional":false},{"name":"Python","optional":false},{"name":"GMAT","optional":true},{"name":"Orekit","optional":true}],"status":"live","first_seen_at":"2026-09-18T02:25:36Z","employer_posted_date":"2026-09-18","last_verified_at":"2026-10-31T07:00:44Z","board_verified":true,"closed_at":null,"days_open":43,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":43},"description":"SAIC is hiring a Senior Astrodynamics Engineer to join a mission-driven analysis team in Chantilly, VA, supporting multiple satellite programs at the forefront of national innovation. This role supports Government customers with frequent access to senior decision-makers and focuses on complex modeling, simulation, and mission analysis for novel satellite missions that directly support national priorities. The engineer will perform independent trade studies and technical assessments and deliver actionable insights to senior Government stakeholders.\nResponsibilities include, but are not limited to:\nPerform complex astrodynamics modeling and simulation, including orbit design, trajectory analysis, and/or orbit determination for current and future satellite missions.\nConduct independent trade studies and technical assessments, including evaluating and validating results provided by external teams.\nAnalyze and design orbit maneuvers (including Rendezvous and Proximity Operations), perform maneuver detection and conjunction assessment, and support space domain awareness and mission operations analysis.\nDevelop, implement, and maintain analysis tools and algorithms using Python or C++ (or similar languages), and leverage High Performance Computing resources where applicable.\nIdentify and assess new mission concepts and technical approaches, collaborating closely with experts in propulsion, sensors (radar/optical), AI/ML, cloud computing, and GPU-accelerated workloads.\nPrepare and deliver clear, concise, and actionable technical briefings and written products to senior Government customers and other stakeholders.\nRefine and update analyses in response to formal internal and external peer reviews and support related analyses across other SAIC prime contracts as needed.\n Bachelor’s degree in Aerospace Engineering, Physics, Applied Mathematics, or a related technical STEM field and 5+ years of relevant experience in astrodynamics, orbit determination, or satellite mission analysis; OR\nMaster’s degree in Aerospace Engineering, Physics, Applied Mathematics, or a related technical STEM field and 2+ years of relevant experience.\nDemonstrated experience with orbital mechanics and at least one of the following: orbit maneuver design, Rendezvous and Proximity Operations (RPO), maneuver detection, conjunction assessment, or space domain awareness analysis.\nProficiency in Python or C++, or the demonstrated ability to rapidly apply existing programming skills in another language to Python or C++ for modeling, simulation, and data analysis.\nProven ability to collaborate effectively in a multi-disciplinary, mutually supportive engineering environment.\nExperience conducting technical analyses and refining results in response to internal and external peer reviews.\nAbility to work on-site in Chantilly, VA.\nClearance Requirements:\nActive TS/SCI clearance with the ability to obtain and maintain a polygraph.\nPreferred Qualifications:\nAdvanced degree (MS) in Aerospace Engineering, Astrodynamics, or a related discipline.\nExperience with RPO mission design, autonomous proximity operations, or satellite servicing concepts.\nExperience with maneuver detection, covariance analysis, and conjunction assessment in operational or high-fidelity simulation environments.\nFamiliarity with High-Performance Computing environments and/or GPU-accelerated computation for large-scale simulations.\nExperience with tools such as STK, FreeFlyer, GMAT, Orekit, or similar astrodynamics and mission analysis software.\nPrior experience supporting national security space or intelligence community space programs.\nPhysical Requirements:\nWork is typically performed in an office or SCIF environment.\nAbility to remain in a stationary position, operating a computer and other office equipment, for extended periods.\nAbility to participate in in-person meetings, briefings, and occasional travel to customer or partner sites as required.\n2026.10.1","description_format":"text","description_chars":3950,"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":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Space 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