Senior Mechanical Design Engineer, Power Conversion Systems

Antares; Los Angeles (CA); On-site; USD 145,000 - 185,000; Full time

Job summary

Antares, located in Torrance, CA, seeks a Mechanical Design Engineer II for the Power Conversion System. You will own the mechanical arrangement, pressure budget, and interfaces between major PCS components and reactor/safety systems, taking hardware from concept through fabrication and test.

The role requires experience with gas loops, high-temperature machinery, and design-for-manufacturability. You will support test rigs, instrumentation, and use NX/ANSYS or Femap to drive design improvements

Qualifications

• Bachelor's degree in Mechanical, Aerospace, or a related engineering discipline.
• 5+ years for Senior Engineer, including hands-on CAD, analysis, fabrication support, and test
• Experience designing pressure-retaining or leak-tight fluid hardware and supporting pressure and leak verification
• Experience releasing production-intent drawings and models for fabrication, including GD&T and tolerance stack-up
• Experience designing hardware for elevated-temperature or high-stress service, including material selection

Responsibilities

• Own the mechanical arrangement and pressure budget of the Power Conversion System and close the loop with cycle performance on parasitic losses.
• Design the working-fluid pressure boundary including piping, joints, penetrations, and isolation with leak-tightness and pressure retention as first-class requirements of a closed cycle.
• Define the mechanical arrangement, maintenance architecture including skid or module arrangement, supports, anchors, and alignment of the rotating machinery, accounting for thermal growth, machinery loads, safety, transport, and seismic conditions.
• Manage mechanical interfaces to major PCS components, reactor, and safety systems.
• Support test rig design and instrumentation placement. Utilize collected data to improve component life and performance.
• Engineer components for high-temperature and high-stress service using metals and advanced materials, in partnership with materials and structural analysis.
• Perform design-for-manufacturability and assembly assessments, including assembly sequence, access, maintainability, and field installation.
• Work with Mechanical, Electrical, Safety, and Nuclear teams to ensure the designs meet the overall objectives and requirements.

Skills

CAD

Analysis

Fabrication support

Test execution

Pressure boundary design

Education

Bachelor's degree in Mechanical, Aerospace, or related engineering discipline

Tools

NX

ANSYS

Femap

PLM/product lifecycle software

Job description

Antares, located in Torrance, CA, seeks a Mechanical Design Engineer II for the Power Conversion System. You will own the mechanical arrangement, pressure budget, and interfaces between major PCS components and reactor/safety systems, taking hardware from concept through fabrication and test.

The role requires experience with gas loops, high-temperature machinery, and design-for-manufacturability. You will support test rigs, instrumentation, and use NX/ANSYS or Femap to drive design improvements