Guidance, Navigation & Control (GNC) Simulation Software Engineer

As a Simulation Software Engineer on the GNC team, you will design, develop, and test our high-fidelity spacecraft simulation that is used to validate the software that controls our satellites while in orbit.

You will improve the core simulation infrastructure and collaborate with engineering teams across the company to model new systems and add interesting new features to the simulator.

Role

• Design, develop, and maintain software for our high-fidelity software simulation platform
• Implement and improve software- and hardware-in-the-loop simulations to validate satellite software and flight algorithms
• Accelerate the software development process through infrastructure improvements
• Develop and enhance Monte Carlo simulation tooling for assessing system performance under various conditions
• Incorporate physics-based models into simulation
• Develop analysis and visualization tooling to provide insight into our system
• Support GNC operations for our fleet of satellites, including on-console and on-call rotations
• Support in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team

Requirements

• BS or MS in Computer Science, Aerospace Engineering, or equivalent background experience
• 2-5+ years in software or building simulations of complex physical systems
• 2-5+ years experience with Python or other high-level object-oriented programming language(s)
• Ability to effectively collaborate with interdisciplinary teams on large software projects
• Strong problem-solving skills and attention to detail
• Highly motivated, self-starting, and able to perform duties autonomously without much supervision
• Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria.

Bonus

• Understanding of classical or modern control theory, and basic orbital mechanics
• Knowledge of memory management, threading, and interprocess communication techniques
• Experience building and maintaining software infrastructure used across teams
• Experience in statistical analysis techniques and Monte Carlo simulation
• Experience with C/C++
• Experience with AI tooling and agentic workflows
• Experience with databases
• Experience with spacecraft design

Senior GNC Controls Engineer

As a Controls Engineer on the GNC team, you will own control algorithms from design through to operation in orbit, and you will develop tooling to analyze and tune our existing controllers.

Role

• Design, implement, and test closed-loop control algorithms for precise pointing, station-keeping, detumble, and desaturation maneuvers for satellites in orbit
• Develop and maintain high-fidelity satellite simulations to validate GNC control algorithms prior to flight 
• Validate and verify algorithm performance through software simulation, Monte Carlo analysis, hardware in the loop, and on-orbit testing
• Perform stability analysis in both time and frequency domains, including gain tuning, margin assessment, and notch filter design for structural flex modes 
• Support system identification efforts using in-orbit telemetry to refine onboard models and improve controller performance 
• Ability to effectively collaborate with interdisciplinary teams on large projects
• Develop operational procedures and provide mission planning support
• Support GNC operations for our fleet of satellites, including on-console and on-call rotations
• Support in recruiting, interviewing, and hiring additional teammates to our rapidly growing team

Requirements

• B.S. or higher in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, or a related technical discipline
• 5+ years of industry experience in GNC, controls, or a closely adjacent discipline
• Strong fundamentals in classical and modern control theory, including frequency-domain analysis (Bode plots, Nyquist, gain/phase margins)
• Experience designing and implementing closed-loop control systems for dynamic systems
• Experience with gain optimization, linearization, and controls tooling development
• Demonstrated experience modeling flexible body dynamics and mitigating their effects through system design and control systems
• Proficiency in Python for algorithm development and simulation
• Experience with modern C++ for on-board software
• Strong problem-solving skills and attention to detail
• Strong written and verbal communication skills and ability to work in a fast-paced, iterative environment
• US Citizenship or Green Card
• Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria

Bonus

• Direct experience with spacecraft attitude control systems (reaction wheels, thrusters, gimbals) 
• Understanding of orbital mechanics and geostationary stationkeeping strategies
• Familiarity with electric or chemical propulsion-based control (e.g., stationkeeping, momentum management maneuvers) 
• Background in estimation theory or Kalman filtering for attitude/orbit determination
• Hands-on experience with hardware-in-the-loop testing or real-time simulation environments
• Experience supporting live satellite operations or anomaly resolution 
• Experience with AI tooling and agentic workflows