Guidance, Navigation & Control (GNC) Simulation Software Engineer

Astranis • San Francisco, CA

21h • $120,000 - $175,000

About The Position

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.

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

Nice To Haves

• 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

Responsibilities

• 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

Benefits

• equity
• high-quality company-subsidized healthcare
• disability and life insurance
• 401(k) retirement planning
• flexible PTO
• free on-site catered meals

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level