Guidance, Navigation & Control (GNC) Simulation Software Engineer at Astranis

<div class="content-intro"><p>Astranis builds advanced satellites for high orbits, expanding humanity’s reach into the solar system. Today, Astranis satellites provide dedicated, secure networks to highly-sophisticated customers across the globe— large enterprises, sovereign governments, and the US military. With five satellites on orbit and many more set to launch soon, the company is servicing a backlog of more than $1 billion of commercial contracts.<br><br>Astranis is the preferred satellite communications partner for buyers with stringent requirements for uptime, data security, network visibility, and customization. Astranis has raised over $750 million from some of the world’s best investors, from Andreessen Horowitz to Blackrock and Fidelity, and employs a team of 450 engineers and entrepreneurs. Astranis designs, builds, and operates its satellites out of its 153,000 sq. ft. headquarters in Northern California, USA.</p></div><p><strong>Guidance, Navigation &amp; Control (GNC) Simulation Software Engineer</strong></p> <p>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.</p> <p>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.</p> <p><strong>Role</strong></p> <ul> <li>Design, develop, and maintain software for our high-fidelity software simulation platform</li> <li>Implement and improve software- and hardware-in-the-loop simulations to validate satellite software and flight algorithms</li> <li>Accelerate the software development process through infrastructure improvements</li> <li>Develop and enhance Monte Carlo simulation tooling for assessing system performance under various conditions</li> <li>Incorporate physics-based models into simulation</li> <li>Develop analysis and visualization tooling to provide insight into our system</li> <li>Support GNC operations for our fleet of satellites, including on-console and on-call rotations</li> <li>Support in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team</li> </ul> <p><strong>Requirements</strong></p> <ul> <li>BS or MS in Computer Science, Aerospace Engineering, or equivalent background experience</li> <li>2-5+ years in software or building simulations of complex physical systems</li> <li>2-5+ years experience with Python or other high-level object-oriented programming language(s)</li> <li>Ability to effectively collaborate with interdisciplinary teams on large software projects</li> <li>Strong problem-solving skills and attention to detail</li> <li>Highly motivated, self-starting, and able to perform duties autonomously without much supervision</li> <li>Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria.</li> </ul> <p><strong>Bonus</strong></p> <ul> <li>Understanding of classical or modern control theory, and basic orbital mechanics</li> <li>Knowledge of memory management, threading, and interprocess communication techniques</li> <li>Experience building and maintaining software infrastructure used across teams</li> <li>Experience in statistical analysis techniques and Monte Carlo simulation</li> <li>Experience with C/C++</li> <li>Experience with AI tooling and agentic workflows</li> <li>Experience with databases</li> <li>Experience with spacecraft design</li> </ul><div class="content-pay-transparency"><div class="pay-input"><div class="description"><div><strong>What we offer:&nbsp;</strong></div> <div>&nbsp;</div> <div>All our positions offer a compensation package that includes equity and robust benefits.</div> <div>&nbsp;</div> <div> <p data-path-to-node="3">Base pay is just one component of Astranis’s total rewards package. Your compensation also includes a significant equity package via incentive stock options, high-quality company-subsidized healthcare, disability and life insurance, 401(k) retirement planning, flexible PTO, and free on-site catered meals.</p> </div> <div>Astranis pay ranges are informed and defined through professional-grade salary surveys and compensation data sources. The actual base salary offered to a successful candidate will additionally be influenced by a variety of factors including experience, credentials &amp; certifications, educational attainment, skill level requirements, and the level and scope of the position.</div></div><div class="title">Base Salary</div><div class="pay-range"><span>$120,000</span><span class="divider">&mdash;</span><span>$175,000 USD</span></div></div></div><div class="content-conclusion"><div><strong>U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required</strong></div> <div>(To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States, or other protected individual as defined by 8 U.S.C. 1324b(a)(3))</div> <div>&nbsp;</div> <div>Our mission and our products are meant to connect the world and everyone in it, regardless of gender, race, creed, or any other distinction. We believe in a diverse and inclusive workplace, and we encourage all people to join our team and bring their unique perspective to help make us stronger.</div></div>