CareerPlan

Senior Mechanical Engineer, Numenor (Reactor)

TorranceFull-time$140k–$180k2026-11-10
On-site · United StatesCitizens or permanent residents only

Core

Design, build, and test mechanical subsystems for a high-temperature nuclear reactor plant, including the reactor core, helium systems, and cooling modules.

Role type

Senior hands-on IC mechanical engineer (nuclear reactor systems)

Builds

Nuclear reactor plant modules and subsystems for industrial-scale clean energy production

Domain

Nuclear energy / Advanced manufacturing

Required skills

Mechanical design, stress analysis, thermal design, pressure vessel codes, CAD (SolidWorks/Creo/NX), GD&T, vendor management, root cause analysis

Preferred skills

High-temperature/high-pressure systems, first-of-a-kind hardware, helium systems, precision mechanisms, ASME codes, nuclear industry experience

Technologies

SolidWorks, Creo, NX, FEA, CFD

Responsibilities

Own mechanical design from concept to detailed design; Perform stress, thermal, and fluid analyses; Develop 3D CAD models and drawings; Manage procurement and factory build; Execute component and integrated testing; Mentor junior engineers; Lead root cause investigations

Seniority

Senior, hands-on IC