Nuclear Methods Engineer
Bellevue, WA
Experience: 6
Education: BS
Category: Energy
Contractor Work Model: Remote
Brand: System One
Compensation Range: 56.00 - 95.00 Per Hour
Job ID: 344014
Date Posted: 12/08/2025
Shortcut: http://jobs.systemone.com/wq4xky
Job Title: Nuclear Methods Engineer
Location: Remote
Type: Contract (yearlong) typically extends on a yearly basis
Compensation: $56 - $95 hourly
Contractor Work Model: Fully Remote
Paid holidays | PTO
System One is seeking a highly motivated Nuclear Methods Engineer to support nuclear analysis methods for design and licensing of a demonstration MCFR reactor, beginning with development and implementation of nuclear analysis capabilities and evolving toward software qualification under and NQA-1 environment. You’ll collaborate with the modeling and simulation lead, MCFR plant design engineers, and the nuclear validation lead in a high-performing, multi-disciplinary environment to automate and then validate these nuclear methodologies.
Tasks
- Development of neutronics methods to perform neutronics analysis of a fast spectrum molten salt reactor.
- Implementation nuclear analysis methodologies via Python software
- Core design and analysis activities of advanced nuclear reactors, including calculation and optimization of fuel management strategies, reactivity coefficients, control rod worth and shutdown margin, and radiation damage.
- Software configuration management through code review, software documentation, software testing, and continuous integration.
- Sensitivity studies to understand the effects and validity of various modeling assumptions, including delayed neutron fractions, evaluated nuclear data sets, geometry representation, etc.
- Validation of neutronics analysis by leveraging benchmark models of historical reactors, reactor experiments, and critical assemblies.
Key Qualifications and Skills
- Bachelors degree in Science or Engineering and 6 – 10 years of relevant experience. Experience Level may be partially substituted for advanced degree depending on position relevance.
- Experience in understanding and executing nuclear design/analysis methodologies, including criticality, flux/power distributions, fuel cycle analyses, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysis, ideally with a focus on fast-neutron reactors.
- Experience with radiation transport software is required. Experience with MCNP, OpenMC, Attila, is preferred. Experience with ARMI, Serpent, SCALE, DIF3D, MC2, PARTISN, MOOSE, PARCS, APA, CASMO, DRAGON, is also relevant.
- Programming experience in any language required, preferably in scientific computing; bonus points for Python skills.
- Working knowledge of fundamental software development tools (e.g. IDEs, version control, profilers, debuggers, documentation builders, packaging tools).
- Experience interacting on nuclear methodology with the DOE and/or NRC under an ASME NQA-1 compliant QA environment is preferred.
- Strong communication skills desired.
- The service provider will possess a high degree of trust and integrity, communicate openly and display respect, and a desire to foster teamwork.
System One, and its subsidiaries including Joulé, ALTA IT Services, 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.
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