Senior GNC Engineer

<div class="content-intro"><div style="font-family: 'Instrument Sans', 'Segoe UI', Trebuchet MS, Tahoma, sans-serif;"> <p style="line-height: 1.4;">Vast is developing next-generation <strong>space stations and space infrastructure</strong> using an incremental, hardware-rich, and low-cost approach. Vast is rapidly developing its multi-module Haven Station to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Haven Demo’s 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world’s first commercial space station when it launches in 2027, followed by additional Haven modules. Additionally, the company recently announced <strong>Vast Satellite</strong>, a high-power satellite product line leveraging its space station components and the heritage of Haven Demo.</p> <p style="line-height: 1.4;">Headquartered in<strong> Long Beach, California</strong>, and with more than 1,000 employees and over a billion dollars in private capital, Vast has built the facilities required to manufacture and operate America’s next space station. The company plans to develop future habitats and systems for the Moon and Mars, dedicated space stations for government partners, and other crewed systems that will unlock the expanding long-term space economy.</p> </div></div><p>Vast is seeking a <strong>Senior GNC Engineer</strong> to own guidance, navigation, and control for a new constellation-ready spacecraft bus — a product line designed to scale to hundreds of spacecraft per year.&nbsp;</p> <p>The satellite bus uses a CMG-based attitude control system — four Vast Mini CMGs in a pyramid configuration. ADCS performance is a defining capability of the bus — it's what enables high-power payloads that demand precise pointing and rapid slew. You'll own the GNC algorithms, simulation environment, sensor suite definition, and pointing performance for the satellite.</p> <p>This is end-to-end ADCS ownership: from architecture trades and algorithm development through 6DOF simulation, hardware-in-the-loop testing, and on-orbit commissioning. You'll engage directly with payload customers on pointing and stability requirements, and you'll define the CMG and sensor performance specs that drive hardware development and procurement across the program.</p> <p>This will be a <strong>full-time</strong>,&nbsp;<strong>exempt</strong> position located in our&nbsp;<strong>Long Beach</strong> location.&nbsp;</p> <p><strong>Responsibilities:&nbsp;</strong&