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Lead / Senior GNC Engineer (Satellites / Spacecraft) Location: Los Angeles, California, United States Employment Type: Full-Time | On-Site Package: Competitive Salary + Equity + Benefits + Flexible PTO Are you a GNC Engineer with strong experience across ADCS, orbital mechanics, and flight operations, looking to take ownership of full mission lifecycle delivery? On offer is the opportunity to join a high-growth space company building next-generation satellite platforms through advanced computational engineering. You’ll lead the development of GNC systems from early mission design through to on-orbit operations, playing a critical role in ensuring spacecraft reach and maintain their intended trajectories. Join a team redefining satellite engineering with a first-principles approach, combining advanced simulation, rapid design iteration, and integrated hardware/software development. You’ll work across orbit design, control systems, propulsion integration, and live mission operations, owning the GNC function end-to-end. This position would suit a hands-on GNC engineer who enjoys both deep technical work and leadership responsibility, someone comfortable moving from simulation and modelling into real-world flight operations.
Job Responsibility:
Lead the design, integration, and testing of GNC systems across satellite programmes
Perform orbit design, trajectory analysis, and momentum/propellant budgeting using STK or Python-based tools
Develop and tune control laws for pointing, detumbling, and station-keeping
Interface with ADCS and propulsion suppliers to ensure seamless system integration
Work closely with avionics and integration teams to ensure correct hardware calibration and performance
Transition into mission operations, managing GNC manoeuvres and resolving in-flight anomalies
Act as the primary technical point of contact for external mission operations coordination (e.g. Space Defence stakeholders)
Document system design, testing, and performance, ensuring compliance with industry standards
Mentor junior engineers and contribute to a high-performance engineering culture
Requirements:
Bachelor’s or advanced degree in Aerospace Engineering or a related discipline with focus on astrodynamics
5+ years of experience in spacecraft GNC, including ADCS and propulsion systems
Strong experience in orbital mechanics, mission design, and trajectory analysis
Proficiency in programming (Python, C++, or MATLAB) for modelling and flight software integration
Experience with satellite operations, ground systems, and GPS interfacing
Hands-on experience working with hardware, integration, or cleanroom environments
Strong leadership ability with experience mentoring engineers and driving technical delivery
Excellent problem-solving skills and attention to detail