• Nuclear Design/Reload Engineer

    System One (Bellevue, WA)
    …shutdown margin. + Sensitivity analysis and uncertainty quantification. + Support of reactor operational interfaces. + Design and analyze new systems for solving ... and neutronic design solutions. Key Qualifications and Skills Education & Experience Preferred Qualifications + BS in Nuclear Engineering with 5-20 years of… more
    System One (05/28/25)
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  • Senior Safety Verification and Validation Engineer

    System One (Bellevue, WA)
    …a growing team supporting the design and licensing of the Natrium Demonstration reactor and is primarily responsible for the verification and validation of software ... subject matter expertise to other projects under development by the Sodium Fast Reactor (SFR) Program. Other engineering activities include, but are not limited to,… more
    System One (07/04/25)
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  • Engineer - New Nuclear Principal / Senior / Staff

    Energy Northwest (Richland, WA)
    …engagement as Energy Northwest positions itself at the forefront of small modular reactor (SMR) and advanced reactor deployment_ . **GENERAL SUMMARY** Provide ... owner's engineer oversight, construction, design reviews of new advanced reactor technologies, and progressive design/build contracts. The position is responsible… more
    Energy Northwest (08/08/25)
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  • Safeguard and Non-Proliferation Engineer

    System One (Bellevue, WA)
    Safeguards & Non-Proliferation Engineer Location: Bellevue, WA (Onsite Preferred ) Employment Type: Contract Duration: 12 months Travel: 10-20% System One is seeking ... Engineer to support a cutting-edge fast-spectrum, chloride salt-cooled molten salt reactor project. This role focuses on developing material accounting methodologies… more
    System One (08/03/25)
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  • Senior Mechanical Design Engineer

    System One (Bellevue, WA)
    …a Sr. Mechanical Design Engineer to support the development of advanced nuclear reactor technology. This role plays a pivotal part in designing key components of ... the Natrium Generation IV Reactor , including core components, reactor structures, and...and technical specifications Strong communication, leadership, and mentorship skills Preferred Experience: Design of core assemblies (fuel/control) in the… more
    System One (08/03/25)
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  • Principal Probabilistic Risk Assessment Engineer

    System One (Bellevue, WA)
    …is responsible for performing PRA and severe accident analysis for our client's reactor design. The PRA Engineer is primarily responsible for internal and external ... that the PRA is appropriate and used for the reactor design and within regulatory requirements, guidance, and standards...+ Knowledge and experience of External Events PRA are preferred . + Knowledgeable of PRA principles and familiar with… more
    System One (08/03/25)
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  • Electrical Engineer Principal - New Nuclear

    Energy Northwest (Richland, WA)
    …an** **Electrical Engineer** **. Experience and/or certifications in new nuclear reactor technologies, new plant design and licensing experience, particularly Small ... Modular Reactors (SMRs), is highly preferred .** **GENERAL SUMMARY** Provide independent engineering service and support to perform highly complex engineering tasks… more
    Energy Northwest (07/30/25)
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  • Mechanical Methods and Validation Engineer

    System One (Bellevue, WA)
    …test data, overseeing validations tests, conducting analysis to support reactor core design, and supporting methods development and uncertainty quantification. ... with uncertainty quantification + Perform mechanical analysis to support design of reactor core system and components + Contribute to software quality assurance of… more
    System One (05/28/25)
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  • Soduim Cover Gas System Design Engineer

    System One (Bellevue, WA)
    System Design Engineer Location: Bellevue, WA (Onsite Preferred ) Employment Type: Contract (W2 via System One) Duration: 12 months Travel: Approximately 10% System ... a System Design Engineer to support the development of an advanced nuclear reactor system. This role focuses on the design, analysis, and integration of engineered… more
    System One (08/03/25)
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  • Fire Protection Specialist

    System One (Bellevue, WA)
    …crucial role in ensuring the safety and compliance of an advanced nuclear reactor project. This position offers a unique opportunity to influence procedures at both ... administrative and operating procedures specifically for and advanced nuclear reactor project. + Collaborate with various departments to facilitate cross-discipline… more
    System One (08/03/25)
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