Guidance, Navigation & Controls Engineer - Spacecraft Flight Control Systems

Guidance, Navigation, & Controls Engineer Spacecraft Flight Control Systems On-site in El Segundo, CA Target salary range: $123,000 - $198,750 We are hiring a Guidance, Navigation & Controls (GNC) Engineer to support the design, development, integration, and delivery of spacecraft Guidance, Navigation & Control (GNC) subsystems for advanced satellite and space programs. This role involves GNC analysis, Flight Control Software (FCSW) development, spacecraft integration and test (I&T), control system design, sensor and actuator selection, and technical leadership while supporting mission‑critical aerospace and national security programs requiring a U.S. Top Secret security clearance. Responsibilities Lead delivery of the complete Guidance, Navigation & Control (GNC) subsystem, including hardware, software, algorithms, and analytical products for satellite programs. Serve as the Responsible Engineering Authority (REA) for one or more spacecraft programs or as the GNC technical focal across multiple programs. Perform spacecraft GNC subsystem design, modeling, analysis, Flight Control Software (FCSW) development, and verification activities. Develop control algorithms and evaluate system performance to ensure compliance with mission and spacecraft requirements. Select and integrate spacecraft sensors and actuators to support mission objectives. Manage GNC subsystem execution within program cost, schedule, and technical performance objectives. Identify technical risks, develop mitigation strategies, and communicate execution status to program leadership. Collaborate with Systems Engineering, software, hardware, manufacturing, integration & test (I&T), and program management teams to ensure system‑level performance. Support satellite integration, environmental testing, launch preparation, and on‑orbit mission operations. Lead, mentor, and provide technical direction to GNC engineering teams by decomposing complex technical efforts into executable work packages. Support mission architecture, system design reviews, verification planning, and lifecycle engineering activities. Qualifications US Citizenship required by Federal Law. Ability to obtain a U.S. Top Secret Security Clearance after hire. Bachelor's degree and 5+ years of related engineering experience, or an equivalent combination of education and experience. Minimum 3+ years of Guidance, Navigation & Control (GNC) engineering experience. Minimum 1+ year of spacecraft or satellite system‑level engineering experience. Minimum 1+ year collaborating with cross‑functional engineering organizations and program leadership. Experience with spacecraft Guidance, Navigation & Control fundamentals. Experience performing spacecraft GNC analysis, subsystem design, software development, verification, and systems integration. Experience working across multidisciplinary aerospace engineering teams throughout the program lifecycle. Preferred Qualifications Bachelor's degree with 9+ years of related engineering experience (Level 4). Active TS/SCI security clearance. Experience supporting satellite Integration & Test (I&T) and on‑orbit mission operations. Advanced knowledge of spacecraft kinematics, dynamics, classical control theory, and modern control systems. Experience performing complex GNC analyses using commercial or internally developed engineering tools. Experience developing Flight Control Software (FCSW) and spacecraft control algorithms. Experience leading technical teams and serving as a Responsible Engineering Authority (REA). Demonstrated ability to decompose complex engineering efforts into executable technical tasks. Experience with project execution, cost and schedule management, and technical risk management. Experience establishing engineering processes, technical standards, and best practices. Proven mentoring and technical leadership experience. Experience with spacecraft architecture development, system integration, trade studies, and mission analysis. Moseley Technical Services, Inc. is an AA/EEO/Veterans/Disabled Employer #J-18808-Ljbffr Moseley Technical Services, Inc.