• Nuclear Design/Reload Engineer

    System One (Bellevue, WA)
    …of reactor operational interfaces. + Design and analyze new systems for solving complex nuclear-related problems. + Execute sensitivity studies to validate ... Position: Nuclear Design/Reload Engineer Location: Remote Duration: 1 year Contract System One is seeking a highly motivated Nuclear Design/Reload Engineer. In this… more
    System One (05/28/25)
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  • Senior Safety Verification and Validation Engineer

    System One (Bellevue, WA)
    …(SFR) Program. Other engineering activities include, but are not limited to, system transient codes development and maintenance, performing reactor transient ... System One is seeking highly motivated Senior Safety...Regulatory Guide 1.203 is required. * Knowledgeable of nuclear systems thermal-hydraulic fundamentals as well as reactor more
    System One (07/04/25)
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  • Soduim Cover Gas System Design Engineer

    System One (Bellevue, WA)
    …a System Design Engineer to support the development of an advanced nuclear reactor system . This role focuses on the design, analysis, and integration of ... join a multidisciplinary engineering team working on a next-generation reactor project with complex interfacing systems . Key...related field. + 5+ years of direct experience in system design and mechanical systems engineering. +… more
    System One (08/03/25)
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  • Probabilistic Risk Assessment Engineer

    System One (Bellevue, WA)
    …supporting the design of reactors under development of the Molten Chloride Fast Reactor (MCFR) Program, specifically this will focus on the further development of ... the PRA to support the Molten Chloride Reactor Experiment (MCRE). Other engineering activities include, but are not limited to, contributing to the development of… more
    System One (06/10/25)
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  • Safety Analysis Engineer

    System One (Bellevue, WA)
    systems fundamentals such as thermal-hydraulic, neutronics, dynamics, and reactor transient behavior in general. + Familiarity and experience with analysis ... System One is seeking a Safety Analysis Engineer...a team supporting the design and licensing of the reactor and is primarily responsible for performing Licensing Basis… more
    System One (06/11/25)
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  • Safeguard and Non-Proliferation Engineer

    System One (Bellevue, WA)
    …and scientists to support material accounting and non-proliferation solutions across reactor systems . + Assist in licensing-related activities with domestic ... WA (Onsite Preferred) Employment Type: Contract Duration: 12 months Travel: 10-20% System One is seeking a Safeguards & Non-Proliferation Engineer to support a… more
    System One (08/03/25)
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  • Senior Mechanical Design Engineer

    System One (Bellevue, WA)
    …key components of the Natrium Generation IV Reactor , including core components, reactor structures, and critical systems within the Nuclear Island. You'll be ... Contract Compensation: $63 - $80 hourly Contractor Work Model: Remote System One (https://www.linkedin.com/preload/#) is actively seeking a Sr. Mechanical Design… more
    System One (08/03/25)
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  • System Design Engineer

    System One (Bellevue, WA)
    …extension Position Overview: System One is seeking a highly capable and motivated System Design Engineer, Fluid Systems who reports to the System Design ... and is focused on system design, analysis, systems engineering, and engineering oversight. In this role, you...oversight. In this role, you will act as a system design engineer for advanced nuclear reactor more
    System One (06/25/25)
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  • Senior Nuclear Safety Analysis Engineer

    System One (Bellevue, WA)
    …years of experience in the nuclear field. + Knowledgeable of nuclear systems thermal-hydraulic, fuel performance, reactor dynamics, and transient phenomena. + ... on a yearly basis Compensation: $102- $130 hourly Contractor Work Model: Remote System One is seeking a Senior Nuclear Safety Analysis Engineer for a long-term,… more
    System One (08/08/25)
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  • Digital Systems V&V Senior Engineer

    System One (Bellevue, WA)
    Job Title: Digital Systems V&V Senior Engineer Location: Remote (US Based) Employment Type: Full-Time, Contract Pay Range: $63 - $80/hour System One is seeking a ... highly capable and motivated Digital Systems Verification and Validation (V&V) Technical Lead to support...technical execution of V&V programs for advanced Generation IV reactor technologies, including Sodium Fast Reactors and Molten Chloride… more
    System One (08/08/25)
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