Senior Mechanical Engineer - Supports

About the role

TerraPower is a nuclear technology company based in Bellevue, Washington. The company focuses on advancing nuclear energy and medical isotope production through innovative technologies. It seeks to become a leader in new nuclear technologies and develop future leaders in the field.

Responsibilities

• Create design solutions for the design development of various reactor structures and components for the Natrium Generation IV Reactor.
• Develop and maintain design specifications, calculations, load evaluations, and qualification reports in compliance with ASME Section III and related nuclear codes and standards.
• Prepare 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.

Requirements

• B.S. in Mechanical Engineering or related discipline from an accredited university.
• Minimum of six years of equipment / component design experience; relevant M.S. degree may be credited as two years of experience.
• Experience in Design for Manufacturability (DFM) and Design for Assembly (DFA).
• Deep understanding of structural and seismic design.
• 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.
• Ability to work with minimum direction to solve challenging problems.
• Ability to work on multiple tasks concurrently during a given work week.
• Familiarity with CAD, SolidWorks preferred.
• Working experience with ASME Boiler and Pressure Vessel Code Section III preferred.

Qualifications and Skills

• Experienced in ASME Section III nuclear design.
• Proficient in ANSYS and other mechanical stress analysis tools.
• Strong problem-solving and analytical skills.
• Excellent communication and collaboration abilities.
• Knowledge of ASME Section III revisions, NRC guidance, and industry best practices.

Benefits

• Competitive Compensation
• Salary, eligible to participate in discretionary short-term incentive payments
• Comprehensive Medical and Wellness Benefits
• Medical
• Vision
• Dental
• Life and Disability
• Gender Affirmation Benefits
• Parental Leave
• 401k Plan
• Generous Paid Time Off (PTO)
• 21 days of annually accrued PTO
• Generous Holiday Schedule
• 10 paid holidays
• Relocation Assistance
• Professional and Educational Support Opportunities