GNC Engineer II

RESPONSIBILITIES

• Own all aspects of Guidance, Navigation, and Control (GNC) system development, including architecture definition, algorithm design, verification, hardware integration, and on-orbit operations.
• Design, test, and validate GNC flight software and embedded algorithms for spacecraft operating in LEO, GEO, and other orbit regimes.
• Develop and maintain spacecraft Attitude and Orbit Determination & Estimation (AOD/AOE) algorithms, including sensor fusion and filtering frameworks (e.g., EKF, UKF, batch least-squares).
• Conduct trade studies and provide design recommendations for GNC hardware such as reaction wheels, torque rods, thrusters, star trackers, sun sensors, IMUs, and RF/optical navigation sensors.
• Develop GNC algorithms and implement them in flight software; verify performance and robustness through high-fidelity simulation, Monte Carlo analysis, and hardware-in-the-loop testing.
• Design, implement, and improve high-fidelity 6-DOF simulation environments for SIL, HIL, and advanced mission analysis.
• Utilize and enhance frequency-domain and time-domain control analysis tools to ensure stability margins, disturbance rejection, and performance in off-nominal conditions.
• Define system- and subsystem-level GNC requirements, interfaces, and verification plans in collaboration with systems engineering.
• Work cross-functionally with avionics, propulsion, software, mission operations, and systems teams to ensure seamless integration of GNC functionality.
• Support on-orbit commissioning, system calibration, maneuver planning, and anomaly resolution throughout mission operations. 

QUALIFICATIONS

• Bachelor’s degree in aerospace engineering, mechanical engineering, physics, or related field
• 2 - 4 years of relevant GNC Engineering experience in the aerospace and defense industry
• Coursework or project experience in spacecraft attitude dynamics, orbital mechanics, and control systems
• Strong understanding of physics, attitude dynamics, orbital mechanics, and software development principles 
• Internship or project experience in GNC, control systems, or simulation development
• Experience with C++ and/or Python for algorithm development, numerical methods, or simulation
• Familiarity with spacecraft GNC concepts, such as sensors, actuators, state estimation, and control laws
• Exposure to filtering or estimation methods (e.g., Kalman filters) through internships, coursework, or projects
• Ability to build, test, and debug software and simulation tools
• Strong analytical skills and ability to work effectively in a multidisciplinary engineering environment
• Demonstrated ability to take ownership of tasks and learn new concepts quickly 

PREFERRED SKILLS AND EXPERIENCE

• Master’s degree in aerospace engineering or equivalent discipline    
• Experience with closed-loop control, orbital maneuvering, filtering, state estimation, fault management, and software development    
• Experience developing simulation environments for spaceflight physics  
• Experience with flight operations and solving problems real-time on console 
• Experience performing line of sight performance analysis such as jitter, smear, and pointing accuracy 
• Experience doing hands-on GNC hardware testing  
• Ability to maintain or obtain TS//SCI US government security clearance

COMPENSATION

• Colorado Base Salary: $90,000 - $155,000
• Equity + Benefits including Health, Dental, Vision, HRA/HSA options, PTO and paid holidays, 401K, Parent