{"id":4180585,"url":"https://alion.io/job/clera-principal-mechanical-engineer-4","title":"Principal Mechanical Engineer","company":{"id":2706,"name":"Clera","domain":"getclera.com","url":"https://alion.io/company/clera","size_band":"11-50","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":80,"open_postings":40,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":6,"computed_at":"2026-11-12T10:38:37Z"}},"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":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":235000,"max":305000,"currency":"USD","period":"year","gross":null,"usd_annual":305000},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-12T17:20:57Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T17:22:33Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About the Role\nJoin a small defense technology team developing autonomous, field-deployed directed energy systems. You will provide senior mechanical engineering judgment across the full system, guiding hardware from architecture and integration through production readiness and field use.\nWhat You'll Do\nOwn mechanical architecture across the system and lead integration with electrical, power, embedded, and optics disciplines.\n\nMake technical decisions on complex hardware problems from concept through production readiness.\n\nGuide hardware release and production processes in partnership with manufacturing.\n\nReview designs, analysis, and documentation to identify risks early and maintain strong engineering standards.\n\nPerform hands-on engineering work where your experience can resolve challenging problems quickly.\n\nMake design and manufacturing tradeoffs across cost, mass, reliability, schedule, and field performance.\n\nShare technical expertise through hands-on mentorship and design collaboration.\n\nWhat We're Looking For\nAt least 10 years of experience designing and shipping complex hardware systems.\n\nMechanical engineering is your primary discipline, with recent hands-on experience in CAD, structures, mechanisms, and packaging.\n\nRepeated experience taking hardware from prototype through manufacturing and field deployment.\n\nExperience leading full-system integration across mechanical and multiple engineering disciplines, with meaningful judgment in electrical, power electronics, or embedded systems.\n\nExperience with ruggedized hardware, real-world operating environments, and analysis such as FEA or hand calculations correlated against test data.\n\nA senior individual contributor or technical lead background at a hardware company that shipped products.\n\nDefense, aerospace, robotics, high-performance automotive, maritime, or directed energy experience is relevant. Experience with high-power thermal management, beam-directing mechanisms, manufacturing scale-up, or military-grade qualification is valuable.\n\nCompensation & Benefits\nBase salary: $235,000 to $305,000 annually. 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