Thermo-Mechanical Engineer II

Antares
Los Angeles
Workplace: OnsiteFull timeUSD 115,000 - 185,000 annuallyFunction: Field Service, Maintenance & Skilled TradesEducation: bachelorsSkills: []

Own thermal management for the Power Conversion System, from system-level thermal energy budgets down to insulation on hot-section joints. Develop heat rejection and cold-sink architecture, size and integrate the recuperator, and define thermal configurations including insulation, surface temperatures, and personnel protection. Manage thermal interfaces and transient requirements across PCS components and safety systems, drive instrumentation placement, correlate models to test data, and support inspection and maintenance plans for life-limited hardware.

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Antares
Antares
2 days ago

Thermo-Mechanical Engineer II

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Last checked: 3 hours agoStatus: Live

Job Summary

Own thermal management for the Power Conversion System, from system-level thermal energy budgets down to insulation on hot-section joints. Develop heat rejection and cold-sink architecture, size and integrate the recuperator, and define thermal configurations including insulation, surface temperatures, and personnel protection. Manage thermal interfaces and transient requirements across PCS components and safety systems, drive instrumentation placement, correlate models to test data, and support inspection and maintenance plans for life-limited hardware.
Location: Los Angeles
Workplace: Onsite
Employment Type: Full time
Job Function: Field Service, Maintenance & Skilled Trades
Seniority: Mid level

Key Responsibilities

  • •Own thermal management and the thermal energy budget for the Power Conversion System, closing the loop with cycle performance on parasitic losses.
  • •Develop heat rejection and cold-sink architecture, including sizing and integrating the recuperator against site and ambient conditions.
  • •Define thermal configuration: insulation selection/design, heat-loss budget, surface temperatures, instrumentation, and personnel protection.
  • •Manage thermal interfaces and thermal transient requirements across major PCS components, the reactor, and safety systems.
  • •Support test rig design and instrumentation placement, use collected data to improve component life and performance, and update models/designs accordingly.

Pay and Benefits

Salary: USD 115,000 - 185,000 annually

Key Requirements

  • •Bachelor’s degree in Mechanical, Aerospace, Nuclear, or a related engineering discipline.
  • •2+ years of full-cycle engineering experience for Engineer II.
  • •Perform thermal analysis (hand calculations and FEA or CFD) to size, configure, or qualify hardware.
  • •Design thermal management hardware for high-temperature systems (e.g., insulation systems, heat-loss budgets, thermal isolation).
  • •Correlate thermal predictions against test data and revise designs based on results.
Experience:NuclearAerospaceHigh-temperature systemsPower generation
Education:Bachelor's in Mechanical, Aerospace, Nuclear, or a related engineering discipline
Tech Stack:FEACFDANSYS MechanicalFemapNX ThermalFluentStar-CCM+

Company Brief

Antares
Designs and builds compact nuclear microreactors for remote, defense, industrial and space applications, focusing on transportable, low-footprint reactors and associated fuel and manufacturing capabilities.
Industry: Nuclear Energy
Company Size: Small (11 to 50 employees)
Growth: Growth Stage Startup
Funding: Series B
Headquarters: Los Angeles, United States
Founded: 2023
Glassdoor
Glassdoor: 3.5
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