Antares Nuclear · Los Angeles
About Us At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We’re fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we’re building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space. The Antares team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, Rigetti Computing, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Idaho, Oak Ridge, Los Alamos, and Savannah River. Antares has raised over $600M in venture capital from top-tier investors and has hundreds of million-dollars on contract with the military services, NASA, and the Department of Energy. ABOUT THE ROLE As a Build Engineer I/II on Antares’ Space team, you will turn engineering designs into hardware that advances nuclear power for space missions. You will own development, prototype, and pathfinder builds from planning through assembly, testing, and as-built closeout. Working closely with design engineers and technicians, you will solve hands-on integration challenges and develop repeatable build processes that support qualification and transition to production. JOB RESPONSIBILITIES - Plan assembly sequences, build flow, and schedules using engineering drawings and CAD models; update models as needed. - Write build procedures and work orders, maintaining accurate as-built records and hardware configuration throughout each build. - Assemble mechanical and fluid hardware using appropriate tools, torque specifications, and hardware selections; support design reviews to confirm adequate safety factors and margins. - Install instrumentation and wiring, perform mid-build checkouts, and support verification, validation, and qualification testing, including test installation, operations, tea…
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