{"schemaVersion":"jobsearcher.job.v1","id":"9164e4ef53f79bffab1ca6fa","url":"https://jobsearcher.com/jobs/9164e4ef53f79bffab1ca6fa","canonicalUrl":"https://jobsearcher.com/jobs/9164e4ef53f79bffab1ca6fa","title":"Nuclear Methods Engineer","description":"Job Title: Nuclear Methods Engineer Location: Bellevue, WA Type: Contract Compensation: $52.00 - $85.00 Work Model: Remote – offsite Hours: 40.0 Overview System 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:  ResponsibilitiesCreate formal documentation of nuclear methods software requirements, design, implementation, and testing in support of licensing our client’s reactorsUpdate, improve, and/or create software to satisfy all licensing requirements during the Validation and Verification (V&V) processIncorporate additional 3rd-party programs in our simulation ecosystem as necessary to support licensingDesign 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 necessaryTrain and support reactor designers and developers in the use of the design software suiteBuild and apply methods to assess the propagation of uncertainty and their effect on safety marginsEnhance engineering team's ability to build models and make meaningful conclusions from simulation output through input tools, visualization, reports, etc. Requirements B.S. degree in Nuclear Engineering with 5-20 years of experienceM.S. degree in Nuclear Engineering with 3-15 years of experiencePh.D. degree in Nuclear Engineering with 2-10 years of experienceFast reactor physics and design intuitionExperience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysisKnowledge of reactor physics analysis methods (deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)Experience with nuclear engineering software such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, etc. preferredStrong computational expertise and programming skills in scientific computing languages (Python, C++, Fortran bonus)Proven ability to automate simulation tools and integrate softwareExperience with software development tools (IDEs, version control, debuggers, documentation tools)Knowledge of nuclear methodology interaction with the NRC under an ASME NQA-1 compliant QA environment preferredGood understanding of numerical methods and applied mathematics (PDEs, stability, statistics, analysis, dynamics)Strong technical documentation skillsAbility to meet aggressive schedules and deliver consistentlySelf-motivated with a passion for software best practices and teamworkExcellent verbal communication skillsSystem 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.System 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.#M- Ref: #161-Managed Staffing Charlotte","company":"System One","rawCompany":"system one","city":"Seattle","state":"WA","isRemote":false,"isActive":false,"createdAt":"2026-07-21T10:54:48.848Z","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":"561320","title":"Temporary Help Services","slug":"temporary-help-services"},{"code":"541690","title":"Other Scientific and Technical Consulting Services","slug":"other-scientific-and-technical-consulting-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Nuclear Methods Engineer","description":"Job Title: Nuclear Methods Engineer Location: Bellevue, WA Type: Contract Compensation: $52.00 - $85.00 Work Model: Remote – offsite Hours: 40.0 Overview System 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:  ResponsibilitiesCreate formal documentation of nuclear methods software requirements, design, implementation, and testing in support of licensing our client’s reactorsUpdate, improve, and/or create software to satisfy all licensing requirements during the Validation and Verification (V&V) processIncorporate additional 3rd-party programs in our simulation ecosystem as necessary to support licensingDesign 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 necessaryTrain and support reactor designers and developers in the use of the design software suiteBuild and apply methods to assess the propagation of uncertainty and their effect on safety marginsEnhance engineering team's ability to build models and make meaningful conclusions from simulation output through input tools, visualization, reports, etc. Requirements B.S. degree in Nuclear Engineering with 5-20 years of experienceM.S. degree in Nuclear Engineering with 3-15 years of experiencePh.D. degree in Nuclear Engineering with 2-10 years of experienceFast reactor physics and design intuitionExperience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysisKnowledge of reactor physics analysis methods (deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)Experience with nuclear engineering software such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, etc. preferredStrong computational expertise and programming skills in scientific computing languages (Python, C++, Fortran bonus)Proven ability to automate simulation tools and integrate softwareExperience with software development tools (IDEs, version control, debuggers, documentation tools)Knowledge of nuclear methodology interaction with the NRC under an ASME NQA-1 compliant QA environment preferredGood understanding of numerical methods and applied mathematics (PDEs, stability, statistics, analysis, dynamics)Strong technical documentation skillsAbility to meet aggressive schedules and deliver consistentlySelf-motivated with a passion for software best practices and teamworkExcellent verbal communication skillsSystem 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.System 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.#M- Ref: #161-Managed Staffing Charlotte","datePosted":"2026-07-21T10:54:48.848Z","dateModified":"2026-07-21T10:54:48.848Z","hiringOrganization":{"@type":"Organization","name":"System One","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Seattle","addressRegion":"WA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"9164e4ef53f79bffab1ca6fa"},"url":"https://jobsearcher.com/jobs/9164e4ef53f79bffab1ca6fa"}}