Senior Engineer, Thermal Hydraulic Test

TerraPower

Everett, WA

Full Time

Posted October 16, 2026

$124k - $161k

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 17, 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

Reporting to the Manager of Thermal Hydraulic Testing, the Senior Thermal Hydraulic Test Engineer is responsible for designing and conducting thermal hydraulic tests to support analytic analysis of for the Natrium Demonstration Plant.

Key Responsibilities

Develop and apply thermal-hydraulic analysis methods, including steady state and transient one-dimensional network hydraulic analyses.
Perform calculations using first principles of heat transfer, fluid dynamics, and thermodynamics to support and validate analysis results.
Perform analysis of reactor normal operations, upset events, emergency events and faulted events as defined in the ASME BPVC Section III to establish design, service, and test loadings and limits.
Perform multiscale and multidisciplinary neutronics and control analyses involving the thermal hydraulics of sodium, molten salt, and non-condensable fluids.
Integrate with other engineering groups performing aspects of component, system, fuel, and control system design and related thermal-hydraulic testing.
Perform code benchmarking and validation analyses to support code qualification and methodology development.

Requirements

Master’s degree in applicable field of Engineering
+3 years of relevant experience in a testing / research and development environment preferred.
Experience working in a laboratory environment
Strong thermal-hydraulic analytical skills with one dimensional hydraulic network analysis, system codes experience and transient analysis.
Experience with post-processing and documenting experiments.
Experience with multiple types of testing (R&D, Acceptance, Validation, Qualification)
Ability to work with a multidisciplinary team of engineers
Ability to handle projects that include multiple objectives and ability to resolve conflicts between objectives.
Ability to work on multiple tasks concurrently during a given work week.
Excellent writing and communication skills.
Safety conscience.
Ability to work with minimum direction to solve challenging research and development problems.
The successful candidate will possess a high degree of trustworthiness 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/