TITLE: Reactor Enclosure System Principal Engineer LOCATION: Bellevue, WA, USA 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. Reactor Enclosure System Principal Engineer The Reactor Enclosure System Principal Engineer reports directly to the Reactor Enclosure System Component Design Manager and is focused on the technical excellence and delivery of the reactor and its components and structures. In this role, you will act as a Principal Engineer supporting TerraPower's Natrium project. The successful candidate will integrate and coordinate with engineers working on the reactor and interfacing systems as part of a high-performing team of engineers and scientists. Responsibilities * Responsible for coordinating a geographically diverse design team to develop design of reactor equipment and supporting engineering documentation. The team members include TerraPower employees, subcontracted resources, partner engineers and teams, and customers. * Provide expert level knowledge and technical leadership in the design of integrated sub-systems and components from requirements definition through final design. * Act as a technical expert for the broad range of reactor systems topics and components, develop and advise solutions to critical team challenges, and champion innovation in the reactor systems team. * Perform technical review and approval of engineering products as an extension of the project design authority, including specialist topics, cross-functional products, critical activities requiring focused resolution, and driving integration across the overall reactor systems and their interfacing SSCs. * Evaluate and facilitate the development of a complete product lifecycle, such as but not limited to necessary construction and fabrication details, startup and testing plans, maintainability/inspectability attributes, and decommissioning plans. * Design to and comply with project codes of record, including ASME BPVC Sect III Div 5. * Manage and verify correct and complete application of regulatory criteria, codes and standards, industry guidance, and design programs to complex mechanical design challenges. * Provide technical direction and oversight of supplier activities, working with or as the contract administrator to ensure delivery of deliverables, as well as performance of technical reviews of deliverables. * Propose and facilitate testing programs for equipment qualification, as needed. * Lead team in strategies for the creation, review and approve design package, including design verification of key