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Reactor Physics Jobs (NOW HIRING)

Radiant

Nuclear Engineer, Core Physics

El Segundo, CA · On-site

$106.50K - $146.48K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... About the Role Radiant is a seeking a Nuclear Engineer, Core Physics responsible for designing and ...

BaRupOn LLC

BaRupOn is actively developing Small Modular Reactor (SMR) and Micro Modular Reactor (MMR ... Bachelor's degree in Nuclear Engineering, Mechanical Engineering, Physics, or a closely related ...

Radiant

Senior Nuclear Engineer

El Segundo, CA · On-site

$133.50K - $184.80K/yr

You will own modeling methods and reactor physics calculations of neutronics parameters such as reactivity, kinetics parameters, and energy deposition distributions used within our cutting-edge ...

Radiant Industries

Senior Nuclear Engineer

El Segundo, CA · On-site

$133.50K - $184.80K/yr

You will own modeling methods and reactor physics calculations of neutronics parameters such as reactivity, kinetics parameters, and energy deposition distributions used within our cutting-edge ...

Standard Nuclear, Inc.

Nuclear Engineer

Oak Ridge, TN · On-site

$94.20K - $112.80K/yr

RESPONSIBILITIES Radiation Transport & Reactor Physics Analysis * Develop, run, and validate radiation transport and reactor physics models using industry-standard tools such as SCALE, MCNP, Serpent ...

Standard Nuclear, Inc.

Nuclear Engineer

Oak Ridge, TN · On-site

$94.20K - $112.80K/yr

RESPONSIBILITIES Radiation Transport & Reactor Physics Analysis * Develop, run, and validate radiation transport and reactor physics models using industry-standard tools such as SCALE, MCNP, Serpent ...

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How much do reactor physics jobs pay per hour?

As of May 28, 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 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 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 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 May 2026, with employment types broken down into 2% Internship, 3% As Needed, 79% Full Time, 1% Part Time, 2% Temporary, and 13% Contract. Highlights an 93% Physical, and 7% Hybrid job distribution, with an average salary of $41,731 per year, or $20.1 per hour.