page_title

Back to jobs

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 a 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. In addition, TerraPower has instituted an Affirmative Action Plan (AAP) in an effort to proactively recruit, hire, and promote women, minorities, disabled persons and veterans.

Principal Engineer, Core Thermal Hydraulics Methods and Analysis

The Principal Engineer reporting to the Manager of Core Thermal Hydraulics Methods and Analysis develops and applies thermal‑hydraulic analysis methods, performs code validation, applies first‑principles calculations, and integrates with multidisciplinary teams to solve reactor‑core design challenges and support testing programs. The role provides technical recommendations through formal documentation and presentations, requiring strong analytical skills, expertise with nuclear systems codes, and the ability to work concurrently across multiple complex tasks.

Responsibilities

Develop and apply thermal-hydraulic analysis methods, including steady state and transient one-dimensional network hydraulic analyses, and identify and implement strategies for validation of the analytical methods
Computational analysis of in-core steady-state thermal hydraulic phenomena
Perform code benchmarking and validation analyses to support code qualification and methodology development
Perform calculations using first principles of heat transfer, fluid dynamics, and thermodynamics to support and validate analysis results
Integrate with other engineering groups performing aspects of component, system, fuel, and control system analysis and related thermal-hydraulic testing
Support development of testing programs needed for reactor core & components
Exercises independent technical judgment and decision-making within delegated authority and leads the resolution of complex, high-impact engineering issues that span systems or disciplines.
Provide input to project planning through defining the work scopes for the critical path of the project
Lead cross-disciplinary teams to analyze the thermal and mechanical design considerations for the safety of the reactor and its components
Provide technical presentations on analyses performed to the broader team, and provide periodic updates to leadership.
Prepare informal and formal reports to document findings and make reasoned recommendations, and report to core thermal hydraulic team manager/lead
Provides technical leadership by mentoring and guiding other engineers, establishing technical direction, and reviewing engineering work products to ensure technical rigor, quality, and compliance with applicable procedures.

Key Qualifications and Skills

Minimum of 6 years of related experience with Bachelor’s degree; or 3 years and a Master’s degree. PhD without commercial experience may be acceptable with relevant research or expertise.
Programming language proficiency in either python or C++ a plus
Experience with a nuclear systems code, or subchannel analysis code (e.g. RELAP, SASSYS, GOTHIC, VIPRE-01) a plus
Demonstrated ability to participate on a multi-disciplinary team of engineers
Experience with analysis of nuclear reactor core subchannel analysis a plus
Experience with low Prandtl number heat transfer analysis a strong plus
Experience with high temperature thermal-fluid systems (e.g. sodium) a plus
Creative thinker with demonstrated strong analytical/problem solving skills
Ability to work on multiple tasks concurrently during a given work week
Excellent writing and communication skills
The successful candidate will possess a high degree of trustworthiness and integrity, communicate openly and display respect and a desire to foster teamwork

TerraPower’s technology is controlled for export by various agencies of the U.S. Government. TerraPower must evaluate applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) in accordance with U.S. Government export control requirements. To facilitate TerraPower’s export control reviews, you will be asked as part of the application process to identify whether you are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident of the United States. Government export authorization approval times vary. Based on the business needs for a particular position, TerraPower may not consider a foreign national from a country if it is impracticable to obtain timely Government export approval.

Job details

Salary Range: $143,101.00 - $185,846.00

Any salary offered within the posted salary band is based on market data and commensurate with the selected candidate’s qualifications and experience. This range is specific to Washington State.

Job Type: Full-time

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

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

First Name

Last Name

Preferred First Name

Country

Phone

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

School

Select...

Degree

Select...

Discipline

Select...

Start date month

Select...

Start date year

End date month

Select...

End date year

LinkedIn Profile

Website

Until such time as current restrictions are adjusted, TerraPower may be unable to hire applicants whose status is other than one of the five status options listed. Please advise your current status.

Select...

Have you ever been denied access to a Nuclear Power Facility?

Select...

Do you now have, or have you ever had, NRC enforcement action, or pending enforcement action, against you?

Select...

What is your availability to start a new position?

Please list your current city and state of residence

Are you willing to move or commute to the location required for this position?

Select...

Are you physically able to perform the functions of the job for which you are applying?

Select...

What is your base salary requirement?

What is your total compensation requirement (base + bonus/incentives)?

Where did you initially hear about this position?

Select...

Are you currently under any Right to Represent agreements with a Staffing Agency?

Select...

As part of our interview process, documentation (including proof of citizenship and NDA signature) will be required as a condition of employment for any and/or all of the above questions answered. *

I acknowledge

Do you have experience with thermal hydraulic analyses?

Select...

Do you have experience preparing high-quality engineering documentation of analysis results?

Select...

Do you have experience with a nuclear or non-nuclear system analysis code or subchannel analysis code such as RELAP, SASSYS, GOTHIC, VIPRE-01 (CFD experience also considered applicable)?

Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in TerraPower LLC.’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Gender

Select...

Are you Hispanic/Latino?

Select...

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Veteran Status

Select...

Principal Engineer, Core Thermal Hydraulics Methods and Analysis

Apply for this job

Voluntary Self-Identification