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Neutronics Jobs (NOW HIRING)

NuScale Power, LLC

Manager, Nuclear Design

Nuclear Design is specifically oriented toward deployment of existing, licensed design capabilities, executing core design, neutronics, fuel design, and associated analyses against customer and ...

Cantos Ventures

Nuclear Engineer

El Segundo, CA · On-site

$106.50 - $146.48/hr

Neutronics: Analysis of ex‑vessel reactor fluxes and energy deposition, criticality safety, and verification and validation (V&V) of the nuclear toolbox and reactor models * Accident and Dose ...

New

Niowave Inc.

Nuclear Engineer

Lansing, MI · On-site

$89K - $107K/yr

... neutronics, thermal-hydraulics, monitoring and controls, or auxiliary systems * common spectroscopy setups (alpha, beta, gamma, neutron) and ability to detect, identify, and quantify radioactive ...

Antares

Senior Nuclear Engineer

Los Angeles, CA · On-site

$150K - $185K/yr

Lead complex neutronics modeling and Multiphysics analysis * Responsible nuclear engineer for design and integration of components as assigned * Mentor junior engineers * Develop and implement ...

Radiant

Nuclear Engineer

El Segundo, CA · On-site

$106K - $146K/yr

Neutronics: Analysis of ex-vessel reactor fluxes and energy deposition, criticality safety, and verification and validation (V&V) of the nuclear toolbox and reactor models. * Accident and Dose ...

Last Energy

Senior Nuclear Engineer

Austin, TX

$103K - $142K/yr

Lead and perform complex thermal-hydraulic and neutronics calculations * Independently verify and approve engineering calculations and safety analyses prepared by peers and junior engineers * Provide ...

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All JobsNeutronics Jobs

Neutronics information

See salary details

$106.5K

$154.5K

$186K

How much do neutronics jobs pay per year?

As of Aug 8, 2026, the average yearly pay for neutronics in the United States is $154,474.00, according to ZipRecruiter salary data. Most workers in this role earn between $146,000.00 and $161,000.00 per year, depending on experience, location, and employer.

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

To thrive as a Neutronics Engineer, you need a solid background in nuclear engineering, physics, and mathematics, typically supported by a relevant degree. Familiarity with reactor physics codes (such as MCNP or SCALE), simulation software, and sometimes a Professional Engineer (PE) license are often required. Analytical thinking, problem-solving abilities, and clear communication are crucial soft skills for effectively interpreting complex data and collaborating with multidisciplinary teams. These skills ensure the safe, efficient, and accurate modeling of nuclear systems, which is essential for reactor design, operation, and regulatory compliance.

What is neutronics?

Neutronics is the study of the behavior and movement of neutrons within nuclear reactors or other systems where nuclear reactions occur. It involves analyzing how neutrons interact with materials, how they are absorbed or scattered, and how their distribution affects the operation and safety of a nuclear reactor. Neutronics specialists use mathematical models and simulations to optimize reactor design, ensure efficient fuel usage, and maintain safety standards. This field is essential for the effective and safe generation of nuclear energy.

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

Professionals in neutronics often encounter challenges such as accurately modeling complex nuclear systems, managing large datasets, and ensuring strict adherence to safety protocols. These challenges can be addressed by staying updated with the latest simulation tools, collaborating closely with multidisciplinary teams (such as nuclear engineers and safety analysts), and participating in ongoing training. Additionally, effective communication and documentation are essential for ensuring that results are clearly understood and can be acted upon by both technical and non-technical stakeholders.

What is the difference between Neutronics vs Radiation Protection Specialist?

AspectNeutronicsRadiation Protection Specialist
Required CredentialsDegree in nuclear engineering, certifications like NEUP or NEETDegree in health physics, certifications like CHP or RC
Work EnvironmentResearch labs, nuclear power plants, simulation centersField sites, hospitals, nuclear facilities
Industry UsageDesigning reactor cores, neutron transport analysisMonitoring radiation exposure, safety compliance

Neutronics focuses on neutron behavior and reactor design, while Radiation Protection Specialists concentrate on safety and exposure management. Both roles require nuclear-related credentials and often work within the nuclear industry, but their daily tasks and focus areas differ significantly.

More about Neutronics jobs
What cities are hiring for Neutronics jobs? Cities with the most Neutronics job openings:
What states have the most Neutronics jobs? States with the most job openings for Neutronics jobs include:
What job categories do people searching Neutronics jobs look for? The top searched job categories for Neutronics jobs are:
Neutronics jobs near you
Infographic showing various Neutronics job openings in the United States as of August 2026, with employment types broken down into 1% Internship, 93% Full Time, and 6% Contract. Highlights an 94% Physical, 3% Hybrid, and 3% Remote job distribution, with an average salary of $154,474 per year, or $74.3 per hour.

Nuclear Primary Systems & T-H Engineer

Ocean Atomics LLC

Bethesda, MD • On-site

$110K - $240K/yr

Full-time

Posted 16 days ago

Job description

The ocean is the largest undeveloped frontier on earth - and the next chapter of abundant energy will be written at sea. We're building the infrastructure to power it.
About Ocean Atomics (OA)
Ocean Atomics is an American company designing, licensing, and assembling a standardized nuclear electric power plant and the surrounding support systems for maritime applications. We will install these plants on any vessel built to our nuclear-ready standards, and will provide end-to-end sustainment in our planned nuclear lifecycle dockyard. We will help develop the licensed operators to unlock this new capability for your energy intensive application at sea. To move fast and to lead the creation of this new market, we are leveraging the compact, proven systems enabled by water-cooled reactors.
Our mission
Scale nuclear energy. Power generations.
Our vision
A maritime commons thriving with abundant, economical, modern, and safe nuclear-powered activity - built, serviced, and staffed by re-industrialized American shipyards and people.
Role Summary
As Nuclear Primary Systems & T-H Engineer, you define the arrangement of the primary system and build the thermal-hydraulic models that prove it works in all design basis conditions. Your analysis is the throughline between arrangement decisions, safety margins, and the licensing case that lets a reactor operate at sea.
This is a role we're hiring at multiple levels (L1 through L4). The work is shared across levels; scope and accountability scale with experience.
What You'll Do
At all levels, you will:
  • Define and maintain the arrangement of the primary system and its interfaces with supporting systems
  • Build, run, and maintain system thermal-hydraulic models spanning steady-state, transient, and accident design basis scenarios
  • Analyze decay heat removal architectures and demonstrate adequate cooling for design basis events, accounting for the maritime environment
  • Couple system models with neutronics and structural inputs to support multiphysics and transient studies
  • Document analysis results and V&V methodology in support of the licensing process
  • Provide primary system and accident-response information to our safety analysis, simulator, and operations teams

At more senior levels you will additionally:
  • Lead trade studies that balance arrangement, component sizing, and safety margins across the primary system
  • Own the licensing basis documentation and justify methodology
  • Mentor newer engineers and review their thermal-hydraulic analyses
  • Drive cross-team coupling decisions with our neutronics and structural teams on multiphysics studies
What You Bring
Required at all levels
  • Bachelor's degree in Nuclear or Mechanical Engineering, or equivalent practical experience
  • Experience building and running system thermal-hydraulic models of nuclear plants, with working knowledge of one or more reactor systems codes (e.g. RELAP5-3D, TRACE)
  • Strong understanding of primary system behavior: natural circulation, two-phase flow, and the tradeoffs between active and passive cooling
  • Working knowledge of decay heat removal design and the design basis events that size it
  • Ability to work on a close, rapidly iterative design team and translate analysis into arrangement decisions

Preferred
  • Familiarity with multiple system and subchannel/CFD tools (e.g. RELAP5-3D, TRACE, GOTHIC, COBRA, STAR-CCM+) and with coupling system models to neutronics
  • Experience supporting safety analysis and licensing basis development (DBAs, LOCA/non-LOCA, station blackout)
  • Strong technical writing skills, particularly for regulator-facing documentation

Don't meet every bullet? We'd still like to hear from you. If you're excited by the mission and most of this resonates, apply.
Export control notice
This role involves access to information subject to U.S. export control laws, including unclassified nuclear technology governed by the U.S. Department of Energy under 10 CFR Part 810. Depending on a candidate's status, access may require DOE authorization, which Ocean Atomics may apply for. Any offer is contingent on your ability to work in compliance with these requirements. We evaluate all applicants regardless of citizenship or national origin, except where required by law.
Why this matters
Every industry on Earth needs scalable, clean energy, and the ocean is the ideal place to unlock it. Joining Ocean Atomics means building real, lasting infrastructure - the kind that powers generations. The world needs abundant energy. Let's make it happen.
Ocean Atomics LLC is an equal opportunity employer.
We are committed to a workplace free of discrimination and do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable law. We are committed to providing reasonable accommodations; if you need an accommodation during the application process, contact info@oceanatomics.com.

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