A
17 days ago
Los Angeles, California, United States· Full-time
$115K – $185K/yr
A
Role overview
Job description
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
…About this listing
- Source: Antares's official careers site (via Ashby) · last confirmed on the source 27 Oct 2026
- Posted 19 Aug 2026
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What they are looking for
Skills & requirements
Qualification
Bachelor's degree in Mechanical, Aerospace, Nuclear, or a related engineering discipline or 5+ years for Senior Engineer, including hands-on analysis, hardware design, build, and test Experience performing thermal analysis (hand calculations and FEA or CFD) to size, configure, or qualify hardware Experience designing thermal management hardware for high-temperature systems, such as insulation systems, heat-loss budgets, or thermal isolation Experience sizing or integrating heat exchangers or a heat rejection path against real operating and ambient conditions Experience correlating thermal predictions against test data and revising a design based on the result Experience owning thermal interfaces or requirements across multiple subsystems Preferred Skills &
Department · Reactor Hardware Engineering
Hiring company
Antares
Antares is a diversified credit platform built on three decades of disciplined credit leadership across private and liquid markets.
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