Consequence Safety Methods & Analysis Engineer

Bellevue, Washington, United States | Natrium | Full-time

Apply by: April 10, 2026
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TITLE:                   Consequence Safety Methods & Analysis Engineer

LOCATION:          Bellevue, WA

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

Consequence Safety Methods & Analysis Engineer

The Consequence Safety Methods & Analysis Engineer is part of a growing team supporting the design and licensing of the Natrium® demonstration reactor and is primarily responsible for performing methodology development and safety analysis in the following areas:

  Licensing Basis Events (LBEs) with Potential Radionuclide Release

  Mechanistic Source Term

  Radiological Release Consequence

  Sodium Chemical Reaction

The Consequence Safety Methods & Analysis Engineer may also contribute as a subject matter expert to other projects under development by the TerraPower Sodium-cooled Fast Reactor (SFR) Program. Other engineering activities include, but are not limited to, performing accident analyses, contributing to software qualification, participating in hazard analysis, participating in Structures, Systems and Components (SSC) classification, as well as performing verification and validation activities.

Under the TerraPower SFR Program, the Consequence Safety Methods & Analysis Engineer receives administrative, technical, and project supervision from the Consequence Safety Methods & Analysis Manager.

Responsibilities:

  Develop methodologies using a graded approach to the Evaluation Model Development and Assessment Process (EMDAP).

  Develop assessment bases (benchmark, identify applicable tests, etc.) and assess the evaluation model.

  Develop analytical and computational models in collaboration with safety analysis engineers.

  Perform transient and accident analyses to meet the design and safety analysis needs of the SFR program.

  Work with an interdisciplinary team of engineers to establish core and SSC functional, performance, safety, and quality requirements, and support the overall design.

  Establish and maintain analyses-of-record and methodology documentation.

  Perform engineering reviews of analyses and other engineering design media.

  Contribute, as needed, to the implementation of capabilities required for transient and accident analysis within the TerraPower software framework.

Key Qualifications and Skills

  B.S. or M.S. in nuclear engineering or a related engineering discipline, with at least 2+ years of experience in the nuclear field (an M.S. degree counts as 1 year of experience)

  Knowledge of nuclear systems thermalhydraulics, fuel performance, reactor dynamics, accident source term analysis, and transient phenomena

  Proficiency with transient and accident analysis codes

  Experience with source term and radiological consequence analysis codes

  Experience in safety analysis methods development

  Experience with SFR safety analysis methods; experience with other reactor designs may also be considered

  Familiarity with nuclear design, regulatory requirements, and riskinformed, performancebased technology guidance for NonLight Water Reactors under Regulatory Guide (RG) 1.233

  Knowledge of Appendix B to 10 CFR 50 and ASME NQA1 requirements related to analysis and software management, with experience working under a quality assurance program

  Strong quantitative, analytical, modeling, reporting, and communication skills

  Experience collaborating on multidisciplinary engineering teams to address complex engineering challenges

  Demonstrated integrity, open communication, respect for others, and a commitment to fostering teamwork

Job Functions

Job Functions are physical actions and/or working conditions associated with the position.  These functions may also constitute essential functions for the job which the employee must be able to fulfill, with or without accommodation.  Information provided below is to help describe the job so that the applicant has a reasonable understanding of the job duties/expectations.  An applicant's ability to perform and/or tolerate these actions and conditions will be discussed and workplace accommodations may be made on a case-by-case basis following an individualized assessment of the applicant and other considerations, including but not limited to any governing safety standards.

  Motor Abilities: Sitting and standing for extended periods, bending/stooping, grasping/gripping, fine motor control (hands).

  Physical exertion and/or requirements: Minimal, with ability to safely lift up to 50 pounds.

  Repetitive work: Prolonged.

  Special Senses: Visual and audio focused work and ability to perform role in personal protective equipment.

  Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hrs./day.

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 Level 9:  $102,804 - $154,206

Salary Range Level 10:  $117,922 - $176,883
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.

Benefits:

  Competitive Compensation

  Salary, eligible to participate in discretionary short-term incentive payments

  Comprehensive Medical and Wellness Benefits for family or individual

o  Medical
o  Vision

o  Dental

o  Life

o  Life and Disability

o  Gender Affirmation Benefits

o  Parental Leave

  401k Plan

  Generous Paid Time Off (PTO)

o  21 days of annually accrued PTO

  Generous Holiday Schedule

o  10 paid holidays

  Relocation Assistance

  Professional and Educational Support Opportunities

  Flexible Work Schedule

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