{"id":2409037,"url":"https://alion.io/job/poseidon-aerospace-senior-gnc-engineer","title":"Senior GNC Engineer","company":{"id":686447,"name":"Poseidon Aerospace","domain":"poseidonaero.com","url":"https://alion.io/company/poseidonaero","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"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":["Alameda, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":99000,"max_usd":188000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":5037},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-13T00:42:37Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-13T19:22:07Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About Poseidon Aerospace:\nPoseidon Aerospace is reimagining how the world moves goods. We build and operate full-size autonomous cargo aircraft - capable of carrying two tons of payload over a thousand nautical miles. From remote communities to contested logistics operations, our platforms unlock a new cost curve for air freight, making it faster, cheaper, and accessible anywhere it's needed. Headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine; we're building something consequential.\nAbout the role\nGNC is how our cargo aircraft knows where it is, decides where to go, and flies there with no pilot on board. As a Senior GNC Engineer you will own the GNC architecture. You will decide how the aircraft is controlled, how it estimates its state, how it behaves when sensors or actuators fail, and what evidence is needed before each new part of the envelope is flown. You will do a large share of the design work yourself and set the technical bar for the engineers around you.\nResponsibilities\nOwn the GNC architecture, including control law structure, navigation solution, guidance modes, and redundancy management\n\nDesign flight control laws for all phases of flight, including takeoff, landing, and failure cases\n\nDesign the navigation and state estimation solution, including sensor selection criteria with avionics\n\nDefine the control response to sensor, actuator, and engine failures, and to loss of link\n\nSet stability margin and performance requirements and show that the design meets them across the envelope\n\nOwn the fidelity of the 6-DOF simulation and its validation against flight data\n\nDefine GNC requirements and interfaces with flight software, avionics, and flight sciences\n\nDefine the verification approach across simulation, hardware-in-the-loop, and flight test\n\nLead GNC flight clearance for envelope expansion and support flight test on site\n\nLead system identification and model updates from flight data\n\nSupport system safety assessments and certification evidence for the flight control system\n\nLead design reviews and mentor other GNC engineers\n\nRequired Qualifications\nB.S. in aerospace engineering, mechanical engineering, electrical engineering, or a related field, or equivalent experience\n\n5+ years designing guidance, navigation, or control systems for aircraft, spacecraft, or comparable vehicles\n\nOwned the GNC design for a vehicle or major flight phase from requirements through flight\n\nAlgorithms you designed have flown on a real vehicle\n\nSupported a flight test campaign, including flight clearance and post-flight model correlation\n\nDesigned control or navigation behavior for sensor or actuator failures\n\nLed design reviews and set technical direction for other engineers\n\nPreferred Qualifications\nGNC experience on fixed-wing uncrewed aircraft\n\nExperience with autonomous takeoff and landing\n\nExperience designing redundancy management for flight control sensors and actuators\n\nExperience building a simulation environment from the ground up\n\nExperience with model-based development and autocode under DO-178C and DO-331\n\nExperience with flight control system certification or military airworthiness\n\nM.S. or Ph.D. in controls, dynamics, or a related field\n\nWhy this role\nThere is no pilot to fall back on. The GNC system flies the aircraft from takeoff to landing, and you will decide how it does that, at a stage where the architecture is still yours to set. You will see your design fly on an aircraft that carries two tons.\nWhat you get from us\nCompetitive salary and meaningful early-stage equity\n\nRelocation support if applicable\n\nEmployee Health Benefit Plans\n\n6% Retirement matching\n\nFlexible PTO\n\nFree lunches, snacks, and a stocked fridge at our offices\n\nAI tools and subscriptions","description_format":"text","description_chars":3780,"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":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":["Transportation & Logistics","Logistics","Air Transport"],"lifecycle":[{"event":"open","at":"2026-10-13T01:36:40Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":36,"reasons":["conf:1","win:early"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/poseidon-aerospace-senior-gnc-engineer","json_url":"https://alion.io/job/poseidon-aerospace-senior-gnc-engineer.json","meta":{"generated_at":"2026-10-13T20:39:28Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":31720,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":686447},"rest":"https://alion.io/mcp/rest/get_company?id=686447"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fposeidon-aerospace-senior-gnc-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fposeidon-aerospace-senior-gnc-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fposeidon-aerospace-senior-gnc-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/poseidon-aerospace-senior-gnc-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fposeidon-aerospace-senior-gnc-engineer"}]}