Spacecraft GNC Engineer (Early)

About this role

Apex is seeking a Spacecraft GNC Engineer to design and develop guidance, navigation, and control systems for commercial satellite buses. You'll work on clean-sheet spacecraft architecture, leading algorithm development, system analysis, and hardware integration while collaborating across engineering teams.

What you'll do

• Develop GNC algorithms for attitude/orbit determination, control, and precision pointing
• Conduct spacecraft dynamics analysis and performance simulations
• Design and test control systems including reaction wheels, thrusters, and magnetic torquers
• Collaborate with spacecraft engineers to define requirements and ensure system integration
• Perform trade studies for optimal GNC configurations considering power, mass, and cost
• Develop test plans and analyze telemetry data for anomaly diagnosis

What they're looking for

• Spacecraft dynamics and orbital mechanics
• Control theory and GNC algorithms
• C/C++, MATLAB, Python programming
• MATLAB/Simulink and STK simulation tools
• GNC hardware knowledge (sensors, actuators)
• Industry standards (CCSDS, ECSS, GPS/GNSS)
• Problem-solving and cross-functional collaboration
• Technical writing and communication