{"schemaVersion":"jobsearcher.job.v1","id":"cd04a6d42139aa1dc1a73bab","url":"https://jobsearcher.com/jobs/cd04a6d42139aa1dc1a73bab","canonicalUrl":"https://jobsearcher.com/jobs/cd04a6d42139aa1dc1a73bab","title":"Nuclear Methods Engineer","description":"Job Title: Nuclear Methods Engineer\nLocation: Bellevue, WA\nType: Contract\nCompensation: $52.00 - $85.00\nWork Model: Remote – offsite\nHours: 40.0\n\nOverview\n\nSystem One is seeking a highly motivated Nuclear Methods Software Engineer for a yearlong, fully remote contract position. In this role, you will support the nuclear methods team:\n\nResponsibilities\nCreate formal documentation of nuclear methods software requirements, design, implementation, and testing in support of licensing our client’s reactors\nUpdate, improve, and/or create software to satisfy all licensing requirements during the Validation and Verification (V&V) process\nIncorporate additional 3rd-party programs in our simulation ecosystem as necessary to support licensing\nDesign 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 models, spatial kinetics, etc., and adjust methods as necessary\nTrain and support reactor designers and developers in the use of the design software suite\nBuild and apply methods to assess the propagation of uncertainty and their effect on safety margins\nEnhance engineering team's ability to build models and make meaningful conclusions from simulation output through input tools, visualization, reports, etc.\nRequirements\nB.S. degree in Nuclear Engineering with 5-20 years of experience\nM.S. degree in Nuclear Engineering with 3-15 years of experience\nPh.D. degree in Nuclear Engineering with 2-10 years of experience\nFast reactor physics and design intuition\nExperience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysis\nKnowledge of reactor physics analysis methods (deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)\nExperience with nuclear engineering software such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, etc. preferred\nStrong computational expertise and programming skills in scientific computing languages (Python, C++, Fortran bonus)\nProven ability to automate simulation tools and integrate software\nExperience with software development tools (IDEs, version control, debuggers, documentation tools)\nKnowledge of nuclear methodology interaction with the NRC under an ASME NQA-1 compliant QA environment preferred\nGood understanding of numerical methods and applied mathematics (PDEs, stability, statistics, analysis, dynamics)\nStrong technical documentation skills\nAbility to meet aggressive schedules and deliver consistently\nSelf-motivated with a passion for software best practices and teamwork\nExcellent verbal communication skills\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":"2026-08-04T21:19:46.924Z","occupations":[{"code":"17-2161.00","title":"Nuclear Engineers","slug":"nuclear-engineers"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"}],"industries":[{"code":"541330","title":"Engineering Services","slug":"engineering-services"},{"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"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Nuclear Methods Engineer","description":"Job Title: Nuclear Methods Engineer\nLocation: Bellevue, WA\nType: Contract\nCompensation: $52.00 - $85.00\nWork Model: Remote – offsite\nHours: 40.0\n\nOverview\n\nSystem One is seeking a highly motivated Nuclear Methods Software Engineer for a yearlong, fully remote contract position. In this role, you will support the nuclear methods team:\n\nResponsibilities\nCreate formal documentation of nuclear methods software requirements, design, implementation, and testing in support of licensing our client’s reactors\nUpdate, improve, and/or create software to satisfy all licensing requirements during the Validation and Verification (V&V) process\nIncorporate additional 3rd-party programs in our simulation ecosystem as necessary to support licensing\nDesign 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 models, spatial kinetics, etc., and adjust methods as necessary\nTrain and support reactor designers and developers in the use of the design software suite\nBuild and apply methods to assess the propagation of uncertainty and their effect on safety margins\nEnhance engineering team's ability to build models and make meaningful conclusions from simulation output through input tools, visualization, reports, etc.\nRequirements\nB.S. degree in Nuclear Engineering with 5-20 years of experience\nM.S. degree in Nuclear Engineering with 3-15 years of experience\nPh.D. degree in Nuclear Engineering with 2-10 years of experience\nFast reactor physics and design intuition\nExperience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysis\nKnowledge of reactor physics analysis methods (deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)\nExperience with nuclear engineering software such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, etc. preferred\nStrong computational expertise and programming skills in scientific computing languages (Python, C++, Fortran bonus)\nProven ability to automate simulation tools and integrate software\nExperience with software development tools (IDEs, version control, debuggers, documentation tools)\nKnowledge of nuclear methodology interaction with the NRC under an ASME NQA-1 compliant QA environment preferred\nGood understanding of numerical methods and applied mathematics (PDEs, stability, statistics, analysis, dynamics)\nStrong technical documentation skills\nAbility to meet aggressive schedules and deliver consistently\nSelf-motivated with a passion for software best practices and teamwork\nExcellent verbal communication skills\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":"2026-08-04T21:19:46.924Z","dateModified":"2026-08-04T21:19:46.924Z","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":"cd04a6d42139aa1dc1a73bab"},"url":"https://jobsearcher.com/jobs/cd04a6d42139aa1dc1a73bab"}}