{"id":2559720,"url":"https://alion.io/job/tiberius-aerospace-gnc-embedded-engineer-orange-county-ca","title":"GNC Embedded Engineer - Orange County, CA","company":{"id":687789,"name":"Tiberius Aerospace","domain":"tiberius.com","url":"https://alion.io/company/tiberius-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Hardware","role_family":"Hardware","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":[],"countries":[],"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":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Embedded C","optional":false},{"name":"MATLAB","optional":false},{"name":"RTOS","optional":false},{"name":"Simulink","optional":false},{"name":"C","optional":true}],"status":"live","first_seen_at":"2026-09-15T13:46:08Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-10-18T08:40:24Z","board_verified":true,"closed_at":null,"days_open":32,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":32},"description":"Position Overview\nTiberius Aerospace is seeking a Senior GNC Navigation Engineer to own the translation of GNC algorithms into production-grade, real-time embedded flight software for the program. This role bridges algorithm design and hardware, developing the embedded navigation filter, guidance logic, and autopilot control laws on the flight computer, along with the SIL and HIL infrastructure required to verify GNC performance end-to-end from algorithm through silicon. You are the person who makes the math run in the box.\nWhat You'll Do\nImplement GNC algorithms including the navigation filter, guidance law, and autopilot control laws in embedded C or C++ targeting the flight computer.\nDefine and own the GNC flight software architecture including task scheduling, sensor data interfaces, GNC state machine, and fault detection logic.\nDevelop and maintain the Software-in-the-Loop environment integrating GNC flight code with the 6-DOF trajectory simulation for closed-loop algorithm verification.\nDesign and build the Hardware-in-the-Loop test bench including GPS signal stimulation, IMU stimulation hardware, actuator emulation, and avionics bus interfaces.\nApply and enforce flight software coding standards and institute code review processes across the GNC software team.\nDefine GNC software requirements and verification test cases and execute and close the GNC software V&V test plan.\nCollaborate with navigation and controls engineers on algorithm translation, numerical stability, and fixed and floating-point performance trade-offs.\nPerform real-time performance characterization covering CPU budget, worst-case execution time, timing jitter, and latency analysis.\nSupport environmental test, ground test, and range test activities as the GNC software technical lead.\nTechnical & Algorithm Implementation & Flight Software Engineering\nImplement the GPS/INS navigation filter in embedded C or C++ with rigorous attention to numerical stability, fixed-point arithmetic constraints, and real-time execution timing.\nDevelop the GNC task framework including sensor read scheduling, filter update cadence, guidance computation, and actuator command output with deterministic timing.\nBuild and maintain the SIL environment in which the production GNC flight binary executes against the MATLAB/Simulink 6-DOF plant model in closed loop for regression testing.\nDesign the HIL test bench architecture including interface hardware for GPS receiver simulation, IMU digital output stimulation, actuator feedback emulation, and data recording.\nImplement auto-code generation workflow from MATLAB/Simulink navigation and control law models to production C code using Embedded Coder or equivalent.\nDefine and apply coding standards for the GNC software module including MISRA-C rules, static analysis requirements, and unit test coverage expectations.\nDevelop the GNC software build system, regression test suite, and continuous integration process to support rapid algorithm iteration.\nCharacterize flight computer GNC software performance under worst-case loading and document CPU margin, memory usage, and stack depth results.\nOperational & Engineering Support\nInterface with the flight computer hardware team on processor selection, memory architecture, sensor bus protocols, and boot sequence requirements.\nCoordinate GNC software schedule and deliverables with systems engineering, the navigation team, and the I&T team.\nSupport range test activities by providing GNC software configuration control, pre-test checkout procedures, and post-test log data extraction.\nParticipate in configuration control board reviews for GNC software changes and maintain the software version log.\nSupport environmental qualification by preparing GNC software test configurations for vibration, thermal, and shock testing.\nProvide GNC software technical inputs to subcontractor statements of work for GPS receiver and IMU firmware interfaces.\nWhat You'll Bring\nB.S. or M.S. in Computer Engineering, Electrical Engineering, or Aerospace Engineering.\n8 or more years of embedded flight software development for flight-critical defense or aerospace systems.\nExpert-level C and C++ in real-time embedded environments including RTOS and bare-metal architectures.\nDemonstrated experience implementing Kalman filter variants or flight control laws in embedded production code.\nProficiency in MATLAB and Simulink Model-Based Design including production C code generation using Embedded Coder or equivalent.\nExperience developing or operating SIL and HIL test infrastructure for GNC algorithm verification.\nMust be a U.S. citizen and eligible to obtain and maintain a U.S. government security clearance.\nPreferred Experience\nExperience with GPS receiver software interfaces including NMEA, binary proprietary protocols, and M-code or SAASM pulse-per-second and timing interfaces.\nBackground implementing DO-178C, MISRA-C, or equivalent safety-critical software standards in a flight program.\nExperience with high-g inertial sensor digital interfaces including SPI or UART IMU protocols and in-flight calibration algorithms.\nFamiliarity with MIL-STD-1553, RS-422, or ARINC 429 avionics bus interfaces.\nBackground with high-g avionics design considerations such as connector retention, PCB via-fill, and component derating under high-g launch load.\nExperience with FPGA co-design for navigation algorithm pre-processing or sensor timing synchronization.\nActive U.S. Secret or Top Secret security clearance.\nWhat We're Looking For\nAn embedded GNC software engineer who can implement a navigation filter from a MATLAB prototype, make it run deterministically on a flight computer, and verify it against a 6-DOF plant model.\nSomeone who owns the SIL and HIL infrastructure, not just uses it, and can build it from scratch when it does not yet exist.\nAn engineer with the numerical instincts to know when a 32-bit float is not enough and the discipline to enforce coding standards that matter.\nA technical leader comfortable reviewing algorithm equations with navigation engineers and debugging SPI bus timing issues with hardware engineers on the same day.\nA high-ownership engineer who treats flight software as a safety-critical deliverable and builds accordingly.\nGrowth Opportunity\nThis role offers the opportunity to build the GNC flight software function at Tiberius Aerospace from the ground up on a program where the algorithm complexity and flight environment are genuinely challenging. The Senior GNC Software Engineer will own the implementation stack, build the test infrastructure, and close the software V&V against a real flight computer. As Tiberius grows, this person will be positioned to lead the broader flight software team and influence avionics architecture decisions on follow-on programs.","description_format":"text","description_chars":6791,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Missiles","Defense Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-14T20:19:38Z"}],"visa":[],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.695,"p_room":0.55,"age_days":31,"expected_fill_days":29,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":200000,"is_top_pay":true},"html_url":"https://alion.io/job/tiberius-aerospace-gnc-embedded-engineer-orange-county-ca","json_url":"https://alion.io/job/tiberius-aerospace-gnc-embedded-engineer-orange-county-ca.json","meta":{"generated_at":"2026-10-18T11:39:23Z","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":17295,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":687789},"rest":"https://alion.io/mcp/rest/get_company?id=687789"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftiberius-aerospace-gnc-embedded-engineer-orange-county-ca"},{"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%2Ftiberius-aerospace-gnc-embedded-engineer-orange-county-ca"},{"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%2Ftiberius-aerospace-gnc-embedded-engineer-orange-county-ca"},{"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/tiberius-aerospace-gnc-embedded-engineer-orange-county-ca\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftiberius-aerospace-gnc-embedded-engineer-orange-county-ca"}]}