Lead Engineer, Mechanical & Fuel Handling ASME

TerraPower; Bellevue (WA); On-site; USD 140,000 - 190,000; Full time

Job summary

TerraPower is seeking a Lead Engineer for Mechanical & Fuel Handling ASME to shape the design development of Natrium reactor structures and components. You will lead design activities, certify DS/DR per ASME III, and collaborate with engineers and scientists to advance next‑gen nuclear technology.

You will mentor junior engineers, ensure code compliance, and coordinate with quality teams and regulators to support licensing and certifications.

Qualifications

• BS in Mechanical Engineering or equivalent; MS preferred.
• 6+ years of equipment design experience, preferably with nuclear components.
• Experience applying ASME Section III nuclear design requirements.

Responsibilities

• Perform design, analysis, and documentation for ASME Section III HB pressure boundaries and HG internals.
• Develop and maintain design specifications, calculations, load evaluations, and qualification reports.
• Prepare and certify engineering design packages with code-compliant calculations.
• Collaborate with multidisciplinary teams to define design requirements and resolve issues.
• Interface with quality teams, reviewers, and regulators to support audits and reviews.
• Support material selection, fabrication, inspection criteria, and acceptance standards.
• Participate in engineering change processes, nonconformance evaluations, and corrective actions.
• Maintain knowledge of ASME III revisions, NRC guidance, and industry practices.
• Provide technical mentorship to junior engineers as needed.

Skills

ASME Section III

Nuclear equipment design

Mentorship

Education

B.S. in Mechanical Engineering

MS preferred

Job description

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.

Lead Engineer, Mechanical & Fuel Handling ASME

In this role, you will create design solutions for the design development of various reactor structures and components for the Natrium Generation IV Reactor. Candidates must have extensive experience in equipment design. The Lead Engineer will report to the Reactor Enclosure System Component Manager. The Lead Engineer will work as part of a high functioning team of engineers and scientists focused on developing the design of next generation advanced nuclear reactors. The Lead Engineer we are seeking is a highly experienced engineer with a strong background in ASME Section III nuclear design. The successful candidate will be responsible for preparing, reviewing, and certifying Design Specifications (DS) and Design Reports (DR) in accordance with ASME Section III requirements, as well as supporting licensing, compliance, and customer deliverables.

Responsibilities

• Perform detailed design, analysis, and documentation for ASME Section III Class HB pressure boundaries and Class HG internals.
• Develop and maintain design specifications, calculations, load evaluations, and qualification reports in compliance with ASME Section III and related nuclear codes and standards.
• Prepare and certify engineering design packages, including performing or reviewing design calculations to ensure accuracy and code compliance.
• Collaborate with multidisciplinary engineering teams to define design requirements, resolve technical issues, and optimize component performance.
• Interface with internal quality teams, third-party reviewers, and regulatory bodies to support audits, design reviews, and code certification processes.
• Support material selection, fabrication requirements, inspection criteria, and acceptance standards for Class HB and HG components.
• Participate in engineering change processes, nonconformance evaluations, and corrective action development as required.
• Maintain current knowledge of ASME Section III revisions, NRC guidance, and industry best practices.
• Provide technical mentorship to junior engineers as needed.

Required Qualifications and Skills

• Education: B.S. degree in Mechanical engineering or equivalent preferred
• Minimum of 6+ years of equipment / component design experience; relevant M.S.