Spacecraft GNC Engineer

About this role

Apex seeks an experienced Spacecraft GNC Engineer to design and develop guidance, navigation, and control systems for commercial satellite buses. You'll lead clean-sheet GNC architecture design, conduct spacecraft dynamics analysis, and collaborate across teams to deliver innovative solutions that meet precision pointing and stability requirements.

What you'll do

• Develop GNC algorithms for attitude/orbit determination, control, and precision pointing
• Conduct spacecraft dynamics analysis and simulations to evaluate system performance and stability
• Design and test control systems including reaction wheels, thrusters, and magnetic torquers
• Perform trade studies on GNC configurations considering power, mass, and cost
• Develop test plans and procedures for GNC systems with anomaly resolution
• Collaborate with software engineers on GNC module development and satellite integration

What they're looking for

• Spacecraft dynamics and orbital mechanics
• Control theory and GNC algorithm design
• C/C++, MATLAB, Python programming
• MATLAB/Simulink and STK simulation tools
• GNC sensors and actuators (gyroscopes, star trackers, thrusters)
• Industry standards (CCSDS, ECSS, GPS/GNSS)
• Telemetry analysis and troubleshooting
• Cross-functional collaboration and technical communication