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System One

Nuclear Methods Engineer

Bellevue, WA · Remote

$52 - $85/hr

Fast reactor physics and design intuition * Experience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients ...

System One

Nuclear Methods Engineer

Bellevue, WA · Remote

$52 - $85/hr

Fast reactor physics and design intuition * Experience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients ...

System One

Nuclear Methods Engineer

Bellevue, WA · Remote

$52 - $85/hr

Fast reactor physics and design intuition * Experience in nuclear design/analysis methodologies including criticality, flux/power distributions, fuel management optimization, reactivity coefficients ...

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How much do reactor physics jobs pay per hour?

As of Sep 11, 2026, the average hourly pay for reactor physics in the United States is $20.06, according to ZipRecruiter salary data. Most workers in this role earn between $12.50 and $25.48 per hour, depending on experience, location, and employer.

What is reactor physics?

Reactor physics is the study of the fundamental processes that occur within a nuclear reactor, focusing on how nuclear reactions are initiated, maintained, and controlled. It involves understanding neutron behavior, fission chain reactions, and how these affect reactor design and operation. Reactor physicists use mathematical models and simulations to ensure reactors operate safely and efficiently, and they play a key role in fuel management and regulatory compliance.

What are the key skills and qualifications needed to thrive as a reactor physicist, and why are they important?

To thrive as a Reactor Physicist, you need a strong background in nuclear engineering or physics, supported by at least a bachelor’s or master’s degree in a relevant field. Familiarity with reactor simulation software (such as MCNP, SCALE, or CASMO), radiation detection instruments, and regulatory standards is essential. Analytical thinking, attention to detail, and strong problem-solving and communication skills help you excel in complex and safety-critical environments. These skills ensure accurate reactor modeling, safe operation, and compliance with stringent nuclear industry regulations.

What are some common challenges faced by professionals working in reactor physics, and how can they be addressed?

Reactor physics professionals often encounter challenges such as ensuring accurate reactor core calculations, adapting to evolving safety regulations, and troubleshooting unexpected operational anomalies. These challenges require a strong foundation in nuclear theory, proficiency with simulation tools, and effective collaboration with engineers, safety analysts, and operations staff. Staying current with industry advancements and participating in ongoing training can help professionals overcome these hurdles and contribute to safe, efficient reactor operations.

What is the difference between Reactor Physics vs Nuclear Engineer?

AspectReactor PhysicsNuclear Engineer
Primary FocusNeutron behavior, reactor core design, and physics calculationsDesign, development, and safety of nuclear systems and reactors
Required CredentialsAdvanced degrees in physics or nuclear engineering, certifications in reactor operationEngineering degrees, professional engineering licenses, certifications in nuclear safety
Work EnvironmentResearch labs, reactor facilities, academic settingsPower plants, research facilities, industry
Industry UsageSpecialized in reactor core physics and modelingBroader nuclear system design and safety analysis

Reactor Physics specialists focus on understanding neutron interactions and reactor core behavior, often working in research or academic settings. Nuclear Engineers have a broader role, encompassing system design, safety, and operational aspects of nuclear reactors. While both roles require advanced education and certifications, Reactor Physics is more specialized in core physics, whereas Nuclear Engineering covers a wider range of nuclear systems and safety protocols.

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Reactor Physics jobs near you
Infographic showing various Reactor Physics job openings in the United States as of September 2026, with employment types broken down into 1% Internship, 1% As Needed, 73% Full Time, 23% Part Time, and 2% Contract. Highlights an 74% Physical, 2% Hybrid, and 24% Remote job distribution, with an average salary of $41,731 per year, or $20.1 per hour.

Nuclear Methods Engineer

Bellevue, WA • Remote

System One
Business Consulting Services • 5 - 10K employees
Learn more about System Oneexternal

$52 - $85/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 22 days ago

Job 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:

Responsibilities

  • Create formal documentation of nuclear methods software requirements, design, implementation, and testing in support of licensing our client’s reactors
  • Update, improve, and/or create software to satisfy all licensing requirements during the Validation and Verification (V&V) process
  • Incorporate additional 3rd-party programs in our simulation ecosystem as necessary to support licensing
  • Design 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
  • Train and support reactor designers and developers in the use of the design software suite
  • Build and apply methods to assess the propagation of uncertainty and their effect on safety margins
  • Enhance 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 experience
  • M.S. degree in Nuclear Engineering with 3-15 years of experience
  • Ph.D. degree in Nuclear Engineering with 2-10 years of experience
  • Fast reactor physics and design intuition
  • Experience 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
  • Knowledge 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. preferred
  • Strong computational expertise and programming skills in scientific computing languages (Python, C++, Fortran bonus)
  • Proven ability to automate simulation tools and integrate software
  • Experience 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 preferred
  • Good understanding of numerical methods and applied mathematics (PDEs, stability, statistics, analysis, dynamics)
  • Strong technical documentation skills
  • Ability to meet aggressive schedules and deliver consistently
  • Self-motivated with a passion for software best practices and teamwork
  • Excellent verbal communication skills

System 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.

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Ref: #161-Managed Staffing Charlotte

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About System One

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System One helps employers get work done more efficiently and economically without compromising quality. Over our 35+ year history, we've helped connect thousands of talented people with innovative companies. The excitement of a perfect fit motivates us every single day.

Industry

Business consulting services and recruiting and staffing services

Company size

5,001 - 10,000 Employees

Headquarters location

Pittsburgh, PA, US

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