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Nuclear Design Engineer Jobs in Seattle, WA (NOW HIRING)

Nuclear Analysis Engineer

Bellevue, WA · Hybrid

$111K - $133K/yr

Is seeking a highly motivated Nuclear Design Engineer. The Nuclear Analysis Engineer will support advanced reactor core design and analysis activities, including fuel management, power distribution ...

Nuclear Analysis Engineer

Bellevue, WA · On-site

$111K - $133K/yr

Is seeking a highly motivated Nuclear Design Engineer. The Nuclear Analysis Engineer will support advanced reactor core design and analysis activities, including fuel management, power distribution ...

Nuclear Methods Engineer Location: Bellevue, WA Type: Contract Compensation: $52.00 - $85.00 Work ... Design and execute sensitivity studies to understand the effects and validity of various modeling ...

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

Design nuclear and industrial process systems and subsystems from concept through final design ... Engineering Design Specifications (EDS) * Interface Control Documents (ICDs) * Support the ...

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

Design nuclear and industrial process systems and subsystems from concept through final design ... Engineering Design Specifications (EDS) * Interface Control Documents (ICDs) * Support the ...

System Design Engineer

Bellevue, WA · On-site

$110K - $151K/yr

Design nuclear and industrial process systems and subsystems from concept through final design ... Engineering Design Specifications (EDS) * Interface Control Documents (ICDs) * Support the ...

Nuclear Methods Engineer

Bellevue, WA

$111K - $133K/yr

Nuclear Methods Engineer TerraPower, LLC. is seeking a highly motivated Nuclear Methods Engineer ... Design and execute sensitivity studies to understand the effects and validity of various modeling ...

Nuclear Methods Engineer

Bellevue, WA · On-site

$111K - $133K/yr

Nuclear Methods Engineer TerraPower, LLC. is seeking a highly motivated Nuclear Methods Engineer ... Design and execute sensitivity studies to understand the effects and validity of various modeling ...

Nuclear Methods Engineer Position Description: Protingent Staffing has an exciting contract Nuclear ... Design and execute sensitivity studies to understand the effects and validity of various modeling ...

System Design Engineer

Bellevue, WA · On-site

$110K - $151K/yr

System One is seeking a System Design Engineer to support advanced nuclear reactor development. This role will support the Sodium Processing Systems team , focusing on system design, vendor ...

System Design Engineer

Bellevue, WA · On-site

$110K - $151K/yr

System One is seeking a System Design Engineer to support advanced nuclear reactor development. This role will support the Sodium Processing Systems team , focusing on system design, vendor ...

System Design Engineer

Bellevue, WA · On-site

$110K - $151K/yr

System One is seeking a System Design Engineer to support advanced nuclear reactor development. This role will support the Sodium Processing Systems team , focusing on system design, vendor ...

Senior Mechanical Design Engineer

Bellevue, WA · Remote

$92K - $126K/yr

Collaborate with structural, thermal, nuclear, manufacturing, and systems engineering teams throughout the design process. * Perform engineering reviews of drawings, calculations, analyses, and ...

System Design Engineer

Bellevue, WA · On-site

$110K - $151K/yr

Position Summary System One is seeking a System Design Engineer to support advanced nuclear reactor projects. This role focuses on system design, analysis, and supplier oversight, supporting complex ...

Senior Mechanical Design Engineer

Bellevue, WA · Hybrid

$101K - $140K/yr

TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company ... Senior Mechanical Design Engineer In this role, you will create design solutions for the design ...

Senior Mechanical Design Engineer

Bellevue, WA · On-site

$101K - $140K/yr

TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company ... Senior Mechanical Design Engineer In this role, you will create design solutions for the design ...

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

System Design Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote ... Design nuclear and industrial process systems and sub-systems from concept through final design

System Design Engineer

Bellevue, WA · Remote

$102K - $140K/yr

System Design Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote ... Design nuclear and industrial process systems and sub-systems from concept through final design

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Nuclear Design Engineer information

See Seattle, WA salary details

$70

$96

$115

How much do nuclear design engineer jobs pay per hour?

As of Jul 28, 2026, the average hourly pay for nuclear design engineer in Seattle, WA is $96.84, according to ZipRecruiter salary data. Most workers in this role earn between $94.09 and $106.68 per hour, depending on experience, location, and employer.

What is a Nuclear Design Engineer job?

A Nuclear Design Engineer is responsible for designing, analyzing, and optimizing nuclear systems, components, or reactors. They work on fuel assemblies, shielding, cooling systems, and safety mechanisms to ensure efficient and secure nuclear operations. Their role involves applying physics, engineering principles, and regulatory standards to develop safe and effective nuclear technology. These engineers collaborate with scientists, regulatory bodies, and project teams to ensure compliance and innovation in nuclear energy or research applications.

What are the key skills and qualifications needed to thrive in the Nuclear Design Engineer position, and why are they important?

To thrive as a Nuclear Design Engineer, you need a strong background in nuclear engineering, physics, and mathematics, typically supported by a relevant Bachelor's or Master's degree. Familiarity with industry-standard modeling software (such as MCNP or SCALE), CAD tools, and adherence to regulations like NRC or ASME codes are essential, and certifications such as a Professional Engineer (PE) license can be advantageous. Strong analytical thinking, teamwork, and effective communication skills set standout candidates apart in this field. These capabilities are vital for ensuring safe, efficient, and compliant nuclear system designs that meet rigorous industry and safety standards.

What engineers make $300,000 a year?

Senior nuclear design engineers with extensive experience, advanced certifications, and specialized skills can earn $300,000 or more annually, especially in high-demand industries or senior leadership roles. Compensation varies based on location, employer, and level of expertise, often including bonuses and benefits.

Can you make $500,000 as a nuclear engineer?

Nuclear design engineers can earn high salaries, especially with extensive experience, advanced certifications, and working in senior or specialized roles. While some senior nuclear engineers in high-demand areas may approach or exceed $500,000 annually, such compensation is typically reserved for those with significant expertise and leadership positions. Entry-level or mid-career salaries are generally lower, often ranging from $80,000 to $150,000 per year.

What are some typical challenges a Nuclear Design Engineer may encounter on the job?

Nuclear Design Engineers often face complex technical challenges, such as optimizing reactor core configurations for safety and efficiency, adhering to strict regulatory requirements, and ensuring accurate modeling of nuclear systems. They may also need to troubleshoot unexpected design issues, interpret extensive technical data, and keep up with advancements in nuclear technology and safety protocols. Working closely with multidisciplinary teams—including mechanical, electrical, and safety engineers—requires strong collaboration and communication. Navigating these challenges not only sharpens problem-solving skills but also contributes significantly to both personal professional development and the overall safety and success of nuclear projects.

What engineers make $500,000 a year?

Highly experienced nuclear design engineers with advanced expertise, leadership roles, or specialized skills can earn $500,000 or more annually, especially in senior management or consulting positions. Such salaries often require extensive experience, advanced certifications, and working in high-demand or high-security environments.

What does a nuclear design engineer do?

A nuclear design engineer develops and analyzes designs for nuclear reactors and related systems to ensure safety, efficiency, and compliance with regulations. They use specialized software, perform simulations, and collaborate with multidisciplinary teams throughout the design process, often requiring knowledge of nuclear physics, engineering principles, and safety standards.
What are the most commonly searched types of Nuclear Design Engineer jobs in Seattle, WA? The most popular types of Nuclear Design Engineer jobs in Seattle, WA are:
What are popular job titles related to Nuclear Design Engineer jobs in Seattle, WA? For Nuclear Design Engineer jobs in Seattle, WA, the most frequently searched job titles are:
What cities near Seattle, WA are hiring for Nuclear Design Engineer jobs? Cities near Seattle, WA with the most Nuclear Design Engineer job openings:
Infographic showing various Nuclear Design Engineer job openings in Seattle, WA as of July 2026, with employment types broken down into 86% Full Time, 10% Part Time, and 4% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $201,427 per year, or $96.8 per hour.
Nuclear Analysis Engineer

Nuclear Analysis Engineer

TerraPower LLC.

Bellevue, WA • Hybrid

$111K - $133K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 10 hours ago


Job description

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. 

Nuclear Analysis Engineer

TerraPower, LLC. Is seeking a highly motivated Nuclear Design Engineer. The Nuclear Analysis Engineer will support advanced reactor core design and analysis activities, including fuel management, power distribution, reactivity coefficients, control rod worth, shutdown margin, and sensitivity/uncertainty studies. This role will contribute to nuclear design solutions, evaluate modeling assumptions, document analysis results, and support the development of methods needed to solve complex reactor design challenges:

  • Perform core design and analysis activities of advanced nuclear reactors, including calculation and optimization of fuel management, power distributions, reactivity coefficients, control rod worth and shutdown margin, sensitivity and uncertainties, consistent with required functional and quality requirements
  • Design and analyze new systems for solving complex problems
  • Design and execute sensitivity studies to understand the effects and validity of various modeling assumptions, including meshing, physics coupling, transport options, cross section preparation, fission product treatment, spatial kinetics, etc., and help build corrected methods if necessary
  • Establish and maintain documentation of analysis results and nuclear design solutions
  • Work at TerraPower is dynamic and evolutionary. As such, new responsibilities often arise, and you should be capable of and excited about learning and applying specialized skills.

Key Qualifications and Skills

  • Experience:
    • B.S. degree in Nuclear Engineering with 5-20 years' experience
    • M.S. degree in Nuclear Engineering with 3-15 years' experience
    • Ph.D. degree in Nuclear Engineering with 2-10 years' experience
    • Competitive candidates will typically have the above experience, but less experienced candidates with highly desired experience with be considered on a case-by-case basis
  • Knowledge of basic nuclear reactor design concepts to meaningfully support engineering team with understanding of systems being designed and code being reviewed
  • Experience in core design and analysis including fuel management optimization, reactivity coefficients, shielding and activation, control rod worth and uncertainty analysis.
  • Strong computational expertise: we like to consider computers as the universe at our fingertips rather than burdensome necessities
  • Experience with nuclear engineering software such as MCNP, DIF3D, MC2, PARTISN, RELAP, SCALE, PARCS, APA, CASMO/SIMULATE, DRAGON, etc.
  • Good working knowledge of nuclear and/or general numerical methods (e.g. PDEs, dynamics, deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)
  • Experience in transient analysis, thermal hydraulics, fuel performance, etc. is desired
  • Fast reactor experience or experience with Core Operating Limits Report/Tech Specs is desired
  • Excellent verbal and communication skills
  • Ability and professionalism to work within published regulatory guidelines for nuclear reactor design
  • An ability to perform professional-quality software development for nuclear applications is preferred
  • Strong programming skills in any language is a plus
  • Experience working in NQA-1 environments desired
  • Maintain software by working with team to implement clearly defined enhancement requests and bug fixes
  • 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.

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 for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)
  • Physical exertion and/or requirements: Minimal, with ability to safely lift up to 25 pounds.
  • Repetitive work: Prolonged
  • Special Senses: Visual and audio focused work
  • Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hours/day
  • Travel required 0-10%

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: $168,316 - $252,475
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
    • 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/