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TerraPower · 4 weeks ago

Senior Mechanical Engineer ASME Lead

Bellevue, WA

Full-time

Hybrid

Senior Level, Lead/Staff

$170K/yr - $235K/yr

8+ years exp

TerraPower is a nuclear technology company based in Bellevue, Washington, focused on advancing nuclear energy and medical isotopes for global living standards. The Senior Mechanical Engineer ASME Lead will design reactor structures for the Natrium Generation IV Reactor, ensuring compliance with ASME Section III requirements and supporting the development of advanced nuclear reactors.

Clean EnergyCleanTechEnergyNuclear

Comp. & Benefits

No H1B

U.S. Citizen Only

Responsibilities

Perform detailed design, analysis, and documentation for ASME Section III Class NF structural supports, including frames, brackets, hangers, and other support elements used in nuclear facilities

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 NF 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

Qualification

ASME Section IIIProfessional Engineer (P.E.)Finite Element AnalysisMechanical Design ExperienceNQA-1 RegulationsAnalytical SkillsCommunication SkillsTeamwork

Required

B.S. degree in Mechanical engineering or equivalent preferred

Minimum of eight years of equipment / component design experience; relevant M.S. degree credited as two years of experience

Active Professional Engineer (P.E.) license required

Working experience with ASME Boiler and Pressure Vessel Code Section III

Demonstrated experience certifying Design Specifications and Design Reports for nuclear pressure-retaining components

Deep understanding of ASME Section III, NQA-1, and related NRC regulations

Experience in finite element stress analysis, mechanical analysis methods, and commercial mechanical stress analysis modeling tools with emphasis on ANSYS

Excellent writing and communication skills

Strong analytical/problem solving skills, creative thinker

The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect and a desire to foster teamwork