Antares Nuclear
Senior Thermo-Mechanical Engineer
$115K–$185K
Los Angeles · Senior · Full-time · Posted Aug 19, 2026
- Experience
- 5+ years for Senior Engineer, including hands-on analysis, hardware design, build, and test; no years specified for other experience.
- Education
- Bachelor’s degree in Mechanical, Aerospace, Nuclear, or a related engineering discipline.
- Visa sponsorship
- Must be a U.S. citizen or national, U.S. lawful permanent resident, refugee, or asylee, or be eligible to obtain required U.S. Department of State authorizations under ITAR requirements.
About the job
Own thermal management and integration of Antares’ Power Conversion System, from heat budgets and heat-rejection architecture through hardware testing, life management, and design updates.
What you'll do
- Develop and manage the PCS thermal energy budget, heat-rejection and cold-sink architecture, recuperator integration, insulation, and personnel-protection limits.
- Manage thermal interfaces and transient requirements across PCS components, the reactor, and safety systems; support test design, instrumentation, and model correlation.
- Address temperature-limited hardware life through design mitigations, inspection and maintenance plans, and collaboration across engineering teams.
What they ask for
- 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 with thermal analysis using hand calculations and FEA or CFD to size, configure, or qualify hardware.
- Experience designing thermal-management hardware for high-temperature systems and sizing or integrating heat exchangers or heat-rejection paths for real operating and ambient conditions.
- Experience correlating thermal predictions with test data, revising designs, and owning thermal interfaces or requirements across multiple subsystems.
Nice to have
- Industry experience in Nuclear, Aerospace, Automotive, Power Generation, Motorsports, or Oil and Gas; or experience with recuperators and air-cooled or dry heat rejection.
- Experience with thermal-mechanical fatigue, creep, high-temperature design codes or materials, thermal instrumentation, life assessment, or commissioning first-of-a-kind hardware.
Pay
$140,000 - $185,000 (base salary); $115K – $185K (compensation; type not specified)
Tools
FEA, CFD, ANSYS Mechanical, Femap, NX Thermal, Fluent, Star-CCM+, ASME BPVC Section III Division 5
Model-written summary · the original posting is authoritative