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Senior Satellite Guidance, Navigation, and Control (GNC) Engineer Verified today

Portal Space Systems · Bothell, WA · Space Systems · first seen 2026-07-30

Responsibilities

  • Design, develop, and validate GNC algorithms with a focus on precise pointing and stability control using linear control methods
  • Perform high-fidelity simulations, modeling, and analysis of guidance, navigation, and control systems
  • Lead avionics integration efforts, including sensor calibration, hardware-in-the-loop testing, and flight software validation
  • Support mission planning, trajectory design, and optimization of spacecraft pointing performance
  • Conduct system performance assessments, stability analysis, and develop risk mitigation strategies
  • Develop and document technical specifications, interface control documents, and system architecture designs
  • Provide hands-on support for integration and testing of flight hardware and software
  • Collaborate with partner organizations on satellite development
  • Mentor junior GNC engineers

Required Qualifications

  • Bachelor's, Master's, or PhD in Aerospace Engineering, Electrical Engineering, Mechanical Engineering, or a related field
  • Minimum of 5 years of experience in spacecraft and satellite GNC development
  • Expertise in precise pointing control using linear control methods
  • Proficiency in MATLAB, Simulink, Python, or C/C++ for simulation and algorithm development
  • Experience with avionics integration, including working with IMUs, star trackers, sun sensors, magnetorquers, GPS receivers, and reaction wheels
  • Deep understanding of spacecraft dynamics, orbital mechanics, and trajectory optimization
  • Experience with high-fidelity simulation, hardware-in-the-loop (HIL), and software-in-the-loop (SIL) testing
  • Familiarity with aerospace industry standards and regulations
  • Strong problem-solving skills and ability to work in a fast-paced, collaborative environment

Preferred Qualifications

  • Experience with real-time embedded software development and flight software implementation
  • Familiarity with Kalman filtering, guidance laws, and autonomous navigation techniques
  • Previous experience in mission operations and post-launch analysis
  • Knowledge of spacecraft communication protocols and fault detection systems
  • Hands-on experience with integration and test campaigns for space missions
Senior GNC Engineer at Portal Space Systems | Flight Proven Space