• Nuclear Methods Software

    System One (Bellevue, WA)
    Overview: System One is seeking an entry-level Nuclear Methods Software Engineer to support development on the ARMI framework-an advanced Python codebase ... audit tests within large Python codebases * Develop and maintain documentation for nuclear methods software * Support CI/CD activities for reactor design and… more
    System One (11/19/25)
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  • Nuclear Methods Engineer

    System One (Bellevue, WA)
    Job Title: Nuclear Methods Engineer Location: Remote Type: Contract (yearlong) typically extends on a yearly basis Compensation: $56 - $95 hourly Contractor ... | PTO System One is seeking a highly motivated Nuclear Methods Engineer to support...demonstration MCFR reactor, beginning with development and implementation of nuclear analysis capabilities and evolving toward software more
    System One (12/09/25)
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  • Senior Nuclear Safety Analysis…

    System One (Bellevue, WA)
    Job Title: Senior Nuclear Safety Analysis Engineer Location: Bellevue, WA Type: Contract (yearlong) Compensation: $69-$115 hourly Contractor Work Model: Remote ... System One is seeking to contract with a Senior Nuclear Safety Analysis Engineer responsible for performing... such as RELAP5, TRACE, TRAC, SAS4A/SASSYS-1, or other nuclear system analysis software . + Experience in… more
    System One (09/16/25)
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  • Senior Safety Methods Engineer

    System One (Bellevue, WA)
    Job Title: Senior Safety Methods Engineer Location: Bellevue, WA (local candidates only) Type: Contract (yearlong) typically extends on a yearly basis ... Model: Onsite Paid holidays and PTO System One is seeking a Senior Safety Methods Engineer to perform design and licensing analyses and develop associated… more
    System One (11/25/25)
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  • Sodium Fire Design and Analysis Engineer

    System One (Bellevue, WA)
    …sodium fire modeling calculations to support our client's design and licensing. The engineer will work directly with other nuclear safety analysis and licensing ... Job Title: Sodium Fire Design and Analysis Engineer Location: Remote Type: Contract (yearlong) Compensation: $102...with at least 10 years of experience in the nuclear field for a long-term, fully remote contract. The… more
    System One (11/02/25)
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  • Primary Heat Transport System Design…

    System One (Bellevue, WA)
    …a light water reactor. In this role, you will act as a system design engineer for our client's advanced nuclear reactor projects or other highly technical ... Job Title: Primary Heat Transport System Design Engineer Location: Remote Type: Contract (yearlong) typically extends...structural, etc.) using a combination of hand calculation and software -based methods . + Identify and ensure effective… more
    System One (11/25/25)
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  • Power Production Electrical Engineer I-V…

    Grant PUD (Beverly, WA)
    **Description** **Closing Date to Apply:** Until Filled **Salary:** ** Engineer I:** $72,737.60 - $112,028.80 ** Engineer II:** $77,105.60 - $118,768.00 ** ... Engineer III:** $91,811.20 - $147,804.80 ** Engineer IV:** $103,168.00 -$180,523.20 ** Engineer V:** $115,960.00 - $202,904.00 Typically, selected candidates… more
    Grant PUD (09/25/25)
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  • Sr. Mechanical Systems Engineer

    Bechtel Corporation (Richland, WA)
    …and understanding of engineering systems, engineering calculations, applications of engineering methods and materials, applications of computer software to ... objectives to create a lasting positive impact. We serve the Infrastructure; Nuclear , Security & Environmental; Energy; Mining & Metals, and the Manufacturing and… more
    Bechtel Corporation (11/19/25)
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  • Thermal Hydraulics Engineer

    System One (Bellevue, WA)
    …CFD verification and validation processes, along with a strong understanding of Software Quality Assurance (SQA) and Nuclear Quality Assurance (NQA-1) standards, ... Job Title: Thermal Hydraulics Engineer Location: Bellevue, WA Type: Long-term Contract Contractor...report directly to the Manager of System Thermal Hydraulics Methods & Analysis, playing a pivotal role in advancing… more
    System One (10/29/25)
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  • Mechanical Systems Engineer

    Bechtel Corporation (Richland, WA)
    …objectives to create a lasting positive impact. We serve the Infrastructure; Nuclear , Security & Environmental; Energy; Mining & Metals, and the Manufacturing and ... (P&IDs), technical reports, studies, design documentation, calculations using engineering software , and specifications for complex mechanical equipment for the waste… more
    Bechtel Corporation (12/10/25)
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  • Senior Engineer , Thermal Hydraulics

    System One (Bellevue, WA)
    Job Title: Senior Engineer , Thermal Hydraulics Location: Bellevue, WA Type: Contract Compensation: $67 - $110 hourly Contractor Work Model: Fully Remote System One ... is seeking a Senior Engineer , Thermal Hydraulics for a fully remote, long-term contract....computational and database tools to support cross-functional collaboration, and software quality assurance. The successful candidate will have prior… more
    System One (11/13/25)
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  • Cyber Reverse Engineer

    Pacific Northwest National Laboratory (Seattle, WA)
    …of over 400 scientists, engineers, and analysts with backgrounds in cyber, nuclear , intelligence, policy, data science, and other fields. We work in ... into unique solutions. **Responsibilities** PNNL is looking for a mid-career software integrity investigator, experienced in static and dynamic software more
    Pacific Northwest National Laboratory (12/09/25)
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  • Interface Manager

    Bechtel Corporation (Bellevue, WA)
    …knowledge of Quality, engineering systems, engineering calculations, applications of engineering methods and materials, applications of computer software to ... create a lasting positive impact. We serve the Infrastructure; Nuclear , Security & Environmental; Energy; Mining & Metals, and...particular scope of work + Assists the Terra Power Engineer leadership team to understand the Bechtel design processes… more
    Bechtel Corporation (12/03/25)
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