{"schemaVersion":"jobsearcher.job.v1","id":"d2cc79426b136b2a8ddeec4f","url":"https://jobsearcher.com/jobs/d2cc79426b136b2a8ddeec4f","canonicalUrl":"https://jobsearcher.com/jobs/d2cc79426b136b2a8ddeec4f","title":"Safety Analysis Engineer, Nuclear","description":"Job Title: Safety Analysis Engineer, Nuclear\nLocation: Bellevue, WA\nType: Contract, 12 months\nContractor Work Model: Remote\n\nOverview\n\nThis contract Safety Analysis Engineer role performs deterministic nuclear safety analysis and transient/accident modeling (RELAP5-3D or similar) to support U.S. NRC licensing submittals. The engineer develops and documents system models, analyzes AOOs/DBEs/DBAs and licensing-basis events, supports FSAR-style reporting, and collaborates across engineering teams on methods development, V&V/benchmarking, and uncertainty/sensitivity studies.\nResponsibilities\nPerform deterministic safety analysis using RELAP5-3D code for the Natrium sodium fast reactor\nAnalyze design basis accidents (DBAs) and licensing basis events (LBEs) to support reactor licensing with US NRC\nModel and integrate various plant systems within safety analysis computer codes\nDevelop safety analysis reports, including the Final Safety Analysis Report (FSAR)\nCollaborate with cross-functional teams on core and reactor SSC requirements and licensing documentation\nContribute to safety method development, code assessment, scaling analysis, and validation activities\nMaintain documentation of models and analysis results\nConduct engineering reviews of analysis and design deliverables\nAssess plant transient benchmark tests and perform relevant benchmark calculations\nSupport implementation of software capabilities for transient and accident analysis\nRequirements\nExtensive experience in nuclear safety analysis and reactor system modeling\nProficiency with safety analysis software such as RELAP5, TRACE, TRAC, SAS4A/SASSYS-1, or similar\nExperience in transient and accident analysis for NRC submittals (e.g., Chapter 15 FSAR)\nStrong knowledge of nuclear systems thermal-hydraulics, reactor physics, and transient phenomena\nFamiliarity with nuclear reactor instrumentation, control systems, and safety regulation compliance\nDegree: B.S. with 10+ years or M.S./Ph.D. with 5-7+ years of nuclear engineering or relevant field\nDemonstrated analytical, modeling, and reporting skills\nExperience working in multidisciplinary teams and under quality assurance programs (NQA-1)\nStrong software engineering skills in Python, Fortran, C++, or similar are a plus\n\nSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.\nSystem One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.\n#M-\n#LI-\n\nRef: #161-Managed Staffing Charlotte","company":"Systemone","rawCompany":"systemone","city":"Seattle","state":"WA","isRemote":false,"isActive":false,"createdAt":"2026-08-05T11:55:30.918Z","occupations":[{"code":"17-2161.00","title":"Nuclear Engineers","slug":"nuclear-engineers"},{"code":"19-4051.00","title":"Nuclear Technicians","slug":"nuclear-technicians"},{"code":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"}],"industries":[{"code":"541690","title":"Other Scientific and Technical Consulting Services","slug":"other-scientific-and-technical-consulting-services"},{"code":"221113","title":"Nuclear Electric Power Generation","slug":"nuclear-electric-power-generation"},{"code":"541330","title":"Engineering Services","slug":"engineering-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Safety Analysis Engineer, Nuclear","description":"Job Title: Safety Analysis Engineer, Nuclear\nLocation: Bellevue, WA\nType: Contract, 12 months\nContractor Work Model: Remote\n\nOverview\n\nThis contract Safety Analysis Engineer role performs deterministic nuclear safety analysis and transient/accident modeling (RELAP5-3D or similar) to support U.S. NRC licensing submittals. The engineer develops and documents system models, analyzes AOOs/DBEs/DBAs and licensing-basis events, supports FSAR-style reporting, and collaborates across engineering teams on methods development, V&V/benchmarking, and uncertainty/sensitivity studies.\nResponsibilities\nPerform deterministic safety analysis using RELAP5-3D code for the Natrium sodium fast reactor\nAnalyze design basis accidents (DBAs) and licensing basis events (LBEs) to support reactor licensing with US NRC\nModel and integrate various plant systems within safety analysis computer codes\nDevelop safety analysis reports, including the Final Safety Analysis Report (FSAR)\nCollaborate with cross-functional teams on core and reactor SSC requirements and licensing documentation\nContribute to safety method development, code assessment, scaling analysis, and validation activities\nMaintain documentation of models and analysis results\nConduct engineering reviews of analysis and design deliverables\nAssess plant transient benchmark tests and perform relevant benchmark calculations\nSupport implementation of software capabilities for transient and accident analysis\nRequirements\nExtensive experience in nuclear safety analysis and reactor system modeling\nProficiency with safety analysis software such as RELAP5, TRACE, TRAC, SAS4A/SASSYS-1, or similar\nExperience in transient and accident analysis for NRC submittals (e.g., Chapter 15 FSAR)\nStrong knowledge of nuclear systems thermal-hydraulics, reactor physics, and transient phenomena\nFamiliarity with nuclear reactor instrumentation, control systems, and safety regulation compliance\nDegree: B.S. with 10+ years or M.S./Ph.D. with 5-7+ years of nuclear engineering or relevant field\nDemonstrated analytical, modeling, and reporting skills\nExperience working in multidisciplinary teams and under quality assurance programs (NQA-1)\nStrong software engineering skills in Python, Fortran, C++, or similar are a plus\n\nSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.\nSystem One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.\n#M-\n#LI-\n\nRef: #161-Managed Staffing Charlotte","datePosted":"2026-08-05T11:55:30.918Z","dateModified":"2026-08-05T11:55:30.918Z","hiringOrganization":{"@type":"Organization","name":"Systemone","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Seattle","addressRegion":"WA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"d2cc79426b136b2a8ddeec4f"},"url":"https://jobsearcher.com/jobs/d2cc79426b136b2a8ddeec4f"}}