NextGenEnergyJobsModern Power System Jobs

Lead Engineer, Natrium Pump

TerraPower

Bellevue, WA

Full Time

Posted July 6, 2026

$154k - $205k

Nuclear Energy

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Listing evidence and provenance

Source: Greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed October 30, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
Pay provenance: Employer-provided pay

Job Description

The Lead Engineer, Natrium Pump reports to the Primary Heat Transport Manager and is focused on the design of the Primary Sodium Pump (PSP) and the Intermediate Sodium Pump (ISP).

Key Responsibilities

Develop and manage technical requirements for the PSP & ISP. This responsibility will include preparing or reviewing the PSP & ISP design specifications and ensuring the correct application of ASME code rules to the design and fabrication of the component.
Perform technical vendor oversight of PSP & ISP designer.
Review and perform owners’ acceptance of vendor deliverables.
Support the PSP & ISP design by performing thermal hydraulic or mechanical analyses using hand calculation or software-based methods.
Lead design reviews for PSP & ISP.
Assist with developing testing requirements, test specifications; provide technical oversight for testing related to the PSP & ISP.
Work with other engineers on physical and fluid interface requirements and design.
In addition to the role as Natrium Lead Pump Engineer, this engineer will occasionally support the primary heat transport system design by:
Coordinating with other teams regarding the results of analyses, such as thermal, seismic, structural, pipe stress, heat transfer, and other analyses performed by others and integrate the results into plant design and operational decisions.
Identify and ensure effective application of correct design codes into the design of plant systems such as ASME, ANS, ASTM, IEEE, NFPA, etc.
Analyze and allocate regulatory criteria and standards to complex mechanical and process system design.
Support planning efforts and maintain schedule adherence for design activities within a system, as well as their integration with an overall plant design delivery schedule.
Interface with the design team to create and manage drawing packages of system designs, including but not limited to Piping and Instrumentation Diagrams (P&IDs), 3D models, and system interface drawings.
Interface with design disciplines (such as mechanical, instrumentation and controls, civil, and nuclear) to identify and develop plant design information and specify system design and performance criteria.
Establish and maintain system requirements and design basis documents for the primary heat transport system.
Propose and initiate testing programs for plant system qualification, as needed.
Provide Support and oversight during test execution, evaluation of test results, and reporting of test results.
Generate design package for systems, sub-systems, and equipment designs including coordination of calculations, design reports, mechanical drawings, and engineering design specifications.
Support licensing activities related to the Natrium demonstration project by assisting in the preparation of licensing submittals.

Requirements

B.S. in Mechanical Engineering or related discipline from an accredited university and 12+ years direct experience. Advanced degrees can be accepted in lieu of experience.
Experience in centrifugal or axial pump design, preferably reactor coolant pump design.
Experience applying ASME Section III Code design, preferably with rotating equipment.
Knowledge and demonstrated experience with pump testing or qualification programs.
Knowledge and demonstrated experience of electric motor operation and electromechanical concepts.
Excellent technical writing, communication, and presentation skills.
Attention to detail and aspiration for technical excellence.
Candidate must be a self-starter and possess ability to coordinate and lead a design team’s effort with minimal direction.
Ability to handle projects that include many competing objectives and design constraints, with ability to resolve conflicts between objectives.
Ability to work on simultaneous tasks that require a multi-disciplinary approach.
Experience working to quality standards on design activities, such as ASME NQA-1.
The successful candidate will possess a high degree of trust and integrity, able to communicate openly, and display respect and a desire to foster teamwork.
Actual position starting level will be determined based on assessment of qualifications.
The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect and a desire to foster teamwork.
This position is subject to qualification requirements in accordance with ANSI/ANS 3.1. Candidates must meet the minimum education and experience criteria applicable to the role, including relevant nuclear industry experience where required. Verification of data will be part of the hiring process.

Benefits & Perks

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
TerraPower Career and Benefits information: https://www.terrapower.com/contact-us/careers/