Senior Manager, Core Mechanical Performance Testing
TerraPower LLC. · Everett, Washington, United States · On-site
Pay: USD 184,367 – 245,823 a year
Posted Sep 29, 2026
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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. As a result, the company’s activities in the fields of nuclear energy and related sciences are yielding significant innovations in the safety and economics of nuclear power, hybrid energy and medical applications – all for significant human health 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.
Senior Manager, Core Mechanical Performance Testing
TerraPower, LLC is seeking a highly motivated Senior Manager to support the engineering efforts of the Natrium Fuel Engineering and Technology team. This role is part of a high‑performing group of engineers responsible for testing and qualification of next‑generation core components and the methodologies that support sodium‑cooled fast reactor development. In this position, you will lead the planning and execution of testing activities that enable design maturation and validation of analytical methods. You will work closely with internal customers to determine feasible testing approaches, timelines, and cost expectations, and you will play a critical role communicating these needs and outcomes to project stakeholders.
Responsibilities:
Develop and manage a highly effective group focused on a broad portion of the interdisciplinary technical scope:
Demonstrate visible, continuous leadership in the areas of safety and quality
Focus on maintaining an inclusive and welcoming work environment which fosters innovation and synergy.
Organize group structure to be able to perform
Hire, train, and qualify personnel
Develop team managers
Identify and propose staffing needs, prepare job descriptions, and interview…