Senior GNC Engineer

Turning Space into a Transportation Layer for EarthWho We Are:  Inversion builds advanced reentry systems to deliver next-generation capabilities from space.  Our mission is to make Earth radically more accessible by turning Low-Earth Orbit into an on-demand logistics domain. We see space not as a destination, but as a platform — one that unlocks unprecedented speed and global reach.  Our spacecraft are designed to deliver payloads anywhere on Earth in under an hour, operating through extreme reentry conditions and landing with high precision. These systems open the door to new ways of testing, delivering, and operating at hypersonic speeds.  Inherently dual-use, our technology is built to meet urgent national security needs while laying the groundwork for future commercial applications. Backed by leading investors including Y Combinator, Spark Capital, and Lockheed Martin Ventures, and working with partners such as the U.S. Space Force and NASA, Inversion is pushing the boundaries of what's possible in space-based defense and logistics.  What You'll Do:  High-performance maneuvering demands an extremely responsive airframe and control system. As the Senior GNC Engineer (Controls), you will be part of the team that develops high fidelity plant models describing Inversion’s reentry vehicles and you own the development of the flight control system that allows our vehicles to track aggressive guidance commands quickly and crisply.  In this role, you will:  Develop plant models of the vehicle and its subsystems — aerodynamics, actuators, sensors, and structural dynamics — at the fidelity needed for control design and verification  Design and analyze high-rate flight control loops that stabilize a statically unstable airframe across the flight envelope  Deliver the autopilot bandwidth and command tracking needed to respond quickly to real-time guidance commands  Quantify and manage stability margins in the presence of sample rate, latency, actuator dynamics, and structural mode constraints  Integrate and exercise control designs in 3-DOF and 6-DOF flight simulations, including Monte Carlo robustness assessment across dispersed conditions  Carry control algorithms through implementation in real-time flight software and hardware-in-the-loop testing  Work closely with the guidance, aerodynamics, structures, and avionics teams to close vehicle-level performance  Required Qualifications:  Bachelor's degree in Aerospace Engineering, Electrical Engineering, Mechanical Engineering, a related field, or equivalent experience  Typically, 5+ years of applicable experience designing and testing control systems for aerospace vehicles  Experience building plant models of aerospace systems, including aerodynamic, actuator, and sensor dynamics and controlling open-loop unstable systems  Experience with high-rate digital control design, including discretization, sample rate selection, and the management of latency and computational delay  Experience developing and exercising 3-DOF and 6-DOF flight simulations  Strong fundamentals in classical and modern control theory, including frequency-domain loop shaping, stability margin analysis, and state-space methods  Proficiency with MATLAB/Simulink and programming languages such as Python or C++  Demonstrated excellent verbal and written communication skills  Capable of working in a dynamic, fast-paced startup environment  This position is on-site at Inversion HQ in Playa Vista, CA.  Must have the ability to obtain and maintain a U.S. government Secret/Top Secret security clearance.  Desired Qualifications:  Master's or PhD in Aerospace Engineering, a related field, or equivalent experience  Experience with autopilot design for reentry, hypersonic, missile, or other high-dynamic-pressure flight systems  Experience applying frequency-domain loop shaping to flight control design, including the construction of phase and gain budgets and the management of two-sided stability margins for conditionally stable systems  Experience modeling actuator nonlinearities, including rate and position limits, and their effect on stability of unstable plants  Experience with flexible-body dynamics and aeroservoelastic effects, including structural mode filtering  Experience with system identification and control-relevant model updates from ground or flight test data  Experience implementing control algorithms in real-time flight software on embedded hardware  Hardware-in-the-Loop (HITL) test experience  Prior experience working in startups and/or small independent teams  The California annual base salary for this role is currently $139,000-$199,000.  Pay Grades are determined by role, level, location, and alignment with market data.  Individual pay will be determined on a case-by-case basis and may vary based on the following considerations: interviews and an assessment of several factors that are unique to each candidate, job-related skills, relevant education and experience, certifications, abilities of the candidate and internal equity.   #LI-FH1ITAR Compliance: To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.     Equal Employment Opportunity: Inversion provides equal employment opportunities to all employees and applicants without regard to race, color, religion, age, sex, gender identity, sexual orientation, national origin, veteran status, or disability.     Inversion collects and processes personal data in accordance with applicable data protection laws.  If you are a US Job Applicant see the CCPA Privacy Policy Notice for further details.