Senior Mechanical Design Engineer (PCS)

The role

You will design hardware that integrates individual machines into an operable power plant. This includes the working-fluid pressure boundary, structural architecture, and high-temperature hardware. You will carry hardware from concept through fabrication, assembly, and test.

What you will do

• Own the mechanical arrangement and pressure budget of the Power Conversion System.
• Design the working-fluid pressure boundary including piping, joints, penetrations, and isolation.
• Define mechanical arrangement, maintenance architecture, supports, anchors, and alignment of rotating machinery.
• 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.
• Perform design-for-manufacturability and assembly assessments.
• Work with Mechanical, Electrical, Safety, and Nuclear teams.

Required 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 mechanical 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
• Experience working the mechanical interfaces between multiple components integrated into a single assembly

Nice to have

• Experience in the Nuclear, Aerospace, Automotive, Power Generation, Motorsports, or Oil and Gas industries
• Experience designing to pressure-boundary codes and standards such as ASME B31.3 or ASME BPVC Section VIII, and writing or executing pressure and leak test procedures
• Experience with compressible flow, and with flow network or pressure-drop modeling to close a system pressure budget
• Experience packaging or integrating rotating machinery, including alignment, supports, and machinery loads
• Experience with high-temperature systems: thermal growth accommodation, expansion joints and bellows, and insulation design
• Experience with skid-mounted or modular plant packaging, system layout, and designing for maintenance access
• Experience with piping flexibility and stress analysis, and with structural FEA of supports and anchors
• Experience with high-temperature metals and advanced materials, including creep-limited design in stainless steels or nickel superalloys
• Experience designing to transport and seismic load cases
• Experience supporting test rig design, instrumentation and sensor placement, and using test data to drive design changes

About the company

Antares is building mass-producible, inherently safe, deployable microreactors to make clean energy abundant. The team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, and other organizations.