Nuclear Systems Mechanical Design Engineer (Austin)

Subcritical Systems, Inc. in Austin is hiring a hands-on mechanical engineer to design components for an advanced reactor facility and to apply first-principles methods across heat transfer, fluid flow, and structural dynamics.

You’ll drive tasks from requirements to commissioning, and ensure systems meet ASME piping and vessel codes. The role involves FEA in ANSYS, CAD in Siemens NX, and close collaboration with physicists, engineers, and tradespeople to deliver safe, robust energy solutions.