Guidance, Navigation & Controls Engineer

Senior Guidance, Navigation & Controls Engineer

On-site in El Segundo, CA.

Target salary range: $135,150 - $198,750.

• Serve as the Responsible Engineering Authority (REA) for the spacecraft GNC subsystem.
• Deliver complete GNC solutions including hardware, flight software, algorithms, analyses, and subsystem integration.
• Perform spacecraft attitude determination and control system design, analysis, modeling, and performance assessment.
• Develop and validate GNC algorithms and Flight Control Software (FCSW).
• Select and evaluate GNC sensors and actuators, including star trackers, IMUs, reaction wheels, magnetorquers, and related hardware.
• Perform spacecraft kinematic, dynamic, estimation, and control system analyses using commercial and internally developed tools.
• Lead subsystem architecture development, design trades, and requirements verification activities.
• Manage GNC scope, schedule, cost, technical risks, and deliverables throughout program execution.
• Provide technical leadership, task decomposition, work delegation, and mentoring for GNC engineering teams.
• Interface closely with systems engineering, flight software, avionics, propulsion, mission operations, and program management teams.
• Support spacecraft Integration & Test (I&T), environmental testing, anomaly resolution, and on-orbit mission operations.
• Report technical progress, risks, and mitigation plans to program and company leadership.

• U.S. Citizenship is required by Federal Law.
• Ability to obtain an Active Secret Clearance required.
• Bachelor’s degree in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Physics, or a related technical discipline.
• 5+ years of industry experience in spacecraft GNC, spacecraft systems engineering, or related aerospace disciplines.
• Strong knowledge of Guidance, Navigation & Control (GNC) principles and spacecraft system design.
• Experience performing spacecraft dynamics, kinematics, estimation, and control system analysis.
• Experience developing analytical tools, simulations, and models to support GNC design and verification.
• Ability to lead technical efforts and decompose complex engineering challenges into executable tasks.
• Experience collaborating across multidisciplinary spacecraft engineering teams.
• Ability to support spacecraft integration, test, and mission operations activities, including occasional off-hours support.

• 10+ years of spacecraft GNC experience supporting satellite development programs.
• Active TS/SCI security clearance.
• Experience supporting spacecraft Integration & Test (I&T) and on-orbit operations.
• Experience leading GNC subsystem development for satellite programs or constellations.
• Strong project management experience, including cost, schedule, and risk management.
• Advanced knowledge of Classical Control Theory, Modern Control Theory, State Estimation, Kalman Filtering, System-Level Trade Studies, Architecture Development, Systems Integration & Analysis.
• Experience establishing technical processes, standards, and engineering best practices.
• Demonstrated success troubleshooting and root-causing spacecraft anomalies during integration and testing.

Moseley Technical Services, Inc. is an AA/EEO/Veterans/Disabled Employer.