TITLE: Senior Materials Engineer LOCATION: Bellevue, WA 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. Senior Materials Engineer TerraPower, LLC is seeking a highly motivated Senior Materials Engineer to support the engineering efforts of the Materials Development & Qualification team. This role will work as part of a high functioning team of engineers focused on development and qualification for next generation material and components for sodium cooled fast reactors. You will be responsible for the development and qualification of core assembly components fabricated from ferritic-martensitic steels such as HT9. You will use fundamental metallurgical principles to drive the development of manufacturing processes for advanced reactor components. You will drive the qualification program for fuel assembly components by designing and executing complex test programs to provide key design data inputs for sodium fast reactor fuel design and licensing. Responsibilities: Lead technical development of suppliers to increase technology readiness level of key fuel assembly components including fuel cladding tubes Apply key lessons learned in conjunction with external suppliers to develop material and component fabrication specifications for the Natrium reactor Use fundamental materials engineering principles to develop basic models of material performance and validate using laboratory testing Develop test requirements, plans, specifications and procedures for testing unique materials in a high temperature liquid sodium metal environment Oversee major test programs for qualification of core assembly materials such as thermal creep, creep-fatigue, irradiation, thermal aging, and sodium exposure Perform scientific analysis on test data and generate technical reports to document new knowledge related to reactor design and qualification Drive development and qualification of next generation ferritic-martensitic fuel cladding materials Interface with various project teams to ensure materials development and testing efforts meet programmatic objectives for a wide range of TerraPower initiatives including the Natrium reactor Provide materials engineering support for the procurement of engineered components and systems Provide material selection guidance for TerraPower's reactor development programs Key Qualifications and Skills Bachelor's degree with minimum 5 years of related experience; or a Master's degree and 3 years of related experience; or a PhD and 1 year of related experience. A degre