TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure, and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, TerraPower originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world.

They recognized energy access was crucial to the health and economic well-being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. TerraPower’s mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field.

Benefits

” TerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. TerraPower is an Equal Opportunity Employer. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law.

RAC Integrated Analysis Senior Engineer TerraPower, LLC. is seeking a Lead Engineer supporting the Natrium Demonstration Project. This role will support the ongoing design and delivery of the Natrium Reactor Air Cooling System (RAC).

The Reactor Air Cooling System uses natural convection to continuously remove heat, providing a passive, always‑on way to keep the reactor safely cooled without relying on pumps or operator actions. The RAC Integrated Analysis Senior Engineer should have expert knowledge of thermal-hydraulic modeling, model scaling, prototype testing, and model validation. This role will champion and drive completion of the integrated Natrium decay heat removal analysis, including analysis, testing, verification, and validation of the complete decay heat removal scenario.

You’ll collaborate with project managers, design engineers, analysts, test engineers, and other engineering specialties in a high-performing, multi-disciplinary environment to deliver the Natrium Reactor Air Cooling System. Join us in this high impact role to help advance a first-of-a-kind nuclear reactor towards commercial development.

Responsibilities

Oversee development and execution of thermal hydraulics analyses for reactor systems, including: Steady-state and transient system behavior Accident and off-normal condition evaluation Core thermal margins and safety limits Establish and maintain the thermal hydraulics analysis basis, including assumptions, methodologies, and acceptance criteria. Establish analysis criteria, including: regulatory criteria, regulatory standards, functional criteria, performance criteria, and failure mode and effects. Serve as the central integrator of thermal hydraulics results across internal engineering teams, suppliers, national labs, and research partners Ensure consistency of boundary conditions, inputs, and assumptions across models and organizations.

Requirements

Prepare complete analysis packages, addressing all relevant phenomena to ensure nuclear safety Perform independent verifications of models and software tools, develop multi-disciplinary margin evaluations, lea