Senior Simulation Engineer

Radiant is seeking a Simulation Engineer to design tests, collect data, and validate our in-house reactor simulation capability. You will collect evidence showing where our models can be trusted, quantify the approximations, and demonstrate where a different model is needed. Your work will directly support the regulatory approval process and improve our ability to optimize next-generation reactor performance.

You will join the simulation software engineering team and serve as its link to the real world. Working closely with our materials lab and materials team, you will design experiments, build digital representations of them in our simulation environment, and use the results to anchor the models to physical reality. This is a highly autonomous individual contributor role for someone who is hands-on, rigorous, and comfortable making technical judgment calls in an early-stage environment.