{"id":812968,"url":"https://alion.io/job/trl11-sr-mechanical-engineer","title":"Sr. Mechanical Engineer","company":{"id":688071,"name":"TRL11","domain":"trl11.com","url":"https://alion.io/company/trl11","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":84,"open_postings":11,"ghost_share":0.182,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":143,"computed_at":"2026-10-23T05:54:15Z"}},"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":["Irvine, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":90000,"max_usd":171000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":5966},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"GD&T","optional":false},{"name":"SolidWorks","optional":false}],"status":"live","first_seen_at":"2026-07-30T00:00:00Z","employer_posted_date":"2026-07-30","last_verified_at":"2026-10-21T16:46:50Z","board_verified":true,"closed_at":null,"days_open":85,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":85},"description":"TRL11 is seeking a hands-on Senior Mechanical Engineer to own the mechanical development of space avionics and electro-optical imaging systems from initial requirements through production and product sustainment.\nThis role will have broad responsibility across the full product lifecycle, including requirements definition and verification, mechanical architecture, detailed design, drawing release, supplier selection, manufacturing engineering, environmental testing, and ongoing product support. The Senior Mechanical Engineer will work closely with cross-functional teams and customers to deliver reliable hardware for demanding space environments.\nThe ideal candidate is a strong individual contributor who is comfortable making technical decisions, working directly with vendors, technicians, and customers, and remaining accountable for a product after the initial design is released.\nKey Responsibilities\nOwn the mechanical development and sustainment of space avionics and electro-optical products.\nTranslate system, optical, thermal, structural, environmental, and manufacturing needs into mechanical requirements.\nDevelop mechanical architectures, concepts, detailed designs, drawings, and release packages.\nDesign enclosures, optical assemblies, structural components, thermal interfaces, and precision electromechanical assemblies.\nPerform tolerance analysis, material selection, fastener selection, interface definition, and design-for-manufacturing reviews.\nSupport prototype builds, first-article inspection, assembly development, troubleshooting, and design iteration.\nIdentify and source initial components and manufacturing partners.\nEvaluate and qualify machine shops, fabrication vendors, coating suppliers, and other external manufacturers.\nDevelop manufacturing processes, assembly instructions, tooling, inspection requirements, and acceptance criteria.\nPlan and execute system verification testing, including imaging performance and environmental testing.\nInvestigate production and field issues, lead root-cause analysis, and implement corrective actions.\nMaintain released designs through configuration changes, obsolescence, cost reduction, and reliability improvements.\nProvide technical mentorship and support the continued development of TRL11’s mechanical engineering practices.\nRequirements\nBasic\nBachelor’s degree in mechanical engineering, aerospace engineering, or a related field.\nAt least 5 years of relevant mechanical product-development experience.\nExperience owning complex hardware through design, release, manufacturing, test, and sustainment.\nStrong proficiency in 3D CAD, engineering drawings, GD&T, tolerance analysis, and configuration-controlled design release with tools such as Onshape, Solidworks, or similar.\nExperience designing precision mechanical or electromechanical assemblies.\nWorking knowledge of thermal management, structural design, materials, coatings, fasteners, and manufacturing processes.\nExperience supporting environmental testing and resolving test failures.\nExperience working directly with machine shops, contract manufacturers, and component suppliers.\nAbility to balance performance, schedule, cost, reliability, and manufacturability.\nStrong technical judgment, attention to detail, and written and verbal communication skills.\nWillingness to work hands-on with prototypes, flight hardware, test equipment, and production personnel.\nPreferred\nExperience with spacecraft, space avionics, cameras, telescopes, optical payloads, or other high-reliability aerospace hardware.\nProficiency with finite element analysis, particularly thermal analysis.\nExperience with structural and thermo-mechanical simulation.\nExperience with optical-mechanical analysis, optical alignment, line-of-sight stability, or STOP analysis.\nFamiliarity with thermal-vacuum, random vibration, sine vibration, mechanical shock, and launch-environment qualification.\nExperience with precision machining, sheet metal, additive manufacturing, castings, adhesives, and optical mounting methods.\nFamiliarity with aerospace configuration management, qualification, acceptance testing, and product-assurance practices.\nExperience transitioning products from prototype or low-rate production into repeatable manufacturing.\nBenefits\nFast paced, energetic startup culture, where you'll learn a lot, have great impact, and have fun doing it\nCompetitive salary range of $120,000 to $180,000\n401k, Health Care Plan (Medical, Dental & Vision)\nUnlimited Paid Time Off (with prior approval), for Vacation, Sick & Public Holidays, Maternity, Paternity\nStock Option Plan participation, based on performance and tenure.","description_format":"text","description_chars":4647,"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":false,"languages":[]},"benefits":["401k plan"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Military"],"lifecycle":[{"event":"open","at":"2026-09-12T10:41:27Z"}],"visa":[],"liveness":{"score":57,"band":"ok","label":"Likely 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