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Radiation Engineer Jobs in California (NOW HIRING)

Antares

Radiation Shielding Engineer

Los Angeles, CA · On-site

$120K - $240K/yr

About the Role As a member of the Licensing and Safety Analysis team, you will be the responsible engineer for the characterization of radiation sources as well as the design and analysis of ...

Antares

Radiation Shielding Engineer

Los Angeles, CA · On-site

About the Role As a member of the Licensing and Safety Analysis team, you will be the responsible engineer for the characterization of radiation sources as well as the design and analysis of ...

Zeno Power

Radiation Protection Manager

Sunol, CA · On-site

Company Overview Zeno Power is the leading developer of nuclear batteries - compact power systems ... Radiation Protection Manager Zeno is seeking a highly motivated Radiation Protection Manager to ...

Zeno Power

Radiation Protection Manager

Sunol, CA · On-site

$155K - $190K/yr

Company Overview Zeno Power is the leading developer of nuclear batteries compact power systems ... Radiation Protection Manager Zeno is seeking a highly motivated Radiation Protection Manager to ...

Zeno Power

Radiation Protection Manager

Sunol, CA

$155K - $190K/yr

Company Overview Zeno Power is the leading developer of nuclear batteries - compact power systems ... Radiation Protection Manager Zeno is seeking a highly motivated Radiation Protection Manager to ...

Zeno Power

Radiation Protection Manager

Sunol, CA · On-site

$155K - $190K/yr

Company Overview Zeno Power is the leading developer of nuclear batteries - compact power systems ... Radiation Protection Manager Zeno is seeking a highly motivated Radiation Protection Manager to ...

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All JobsRadiation Engineer JobsRadiation Engineer Jobs in California

Radiation Engineer information

See California salary details

$80.4K

$116.8K

$158.9K

How much do radiation engineer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for radiation engineer in California is $116,813.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,300.00 and $154,000.00 per year, depending on experience, location, and employer.

What is the difference between Radiation Engineer vs Medical Physicist?

AspectRadiation EngineerMedical Physicist
CredentialsBachelor's or Master's in Engineering, certifications in radiation safetyDoctorate in Medical Physics, board certification (ABMP or ABR)
Work EnvironmentIndustrial, nuclear power plants, research labsHospitals, clinics, cancer treatment centers
Industry UsageDesigning radiation systems, safety protocolsCalibrating equipment, treatment planning

While both roles involve radiation and safety, Radiation Engineers focus on designing and maintaining radiation systems in industrial or research settings, whereas Medical Physicists specialize in radiation therapy and diagnostic imaging in healthcare. The key differences lie in their work environments, required credentials, and specific responsibilities.

What are the main challenges radiation engineers face when working on projects for space applications?

Radiation Engineers working on space-related projects often encounter the challenge of accurately predicting and mitigating the effects of cosmic radiation on spacecraft systems and components. This requires a strong understanding of radiation environments, materials science, and specialized testing protocols. Collaboration with design, testing, and mission assurance teams is essential to ensure that electronic systems can withstand harsh radiation without failure. Additionally, staying updated with evolving standards and simulation tools is key to delivering robust and compliant solutions.

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

To thrive as a Radiation Engineer, you need a solid background in physics, electrical engineering, or nuclear engineering, often supported by a relevant bachelor's or master's degree. Familiarity with radiation testing equipment, simulation software (such as Geant4 or MCNP), and knowledge of industry standards like MIL-STD-883 are typically required. Strong analytical thinking, problem-solving abilities, and effective teamwork are valuable soft skills for this role. These skills and qualifications are crucial for accurately assessing radiation effects on materials and systems, ensuring safety, compliance, and performance in high-reliability environments.

What is a radiation engineer?

The duties of a radiation engineer are to conduct experiments that test and evaluate radiation effects in a variety of settings. Their responsibilities include providing theoretical analysis based on a test they perform in an experimental environment. Professionals in this career often focus on the performance of systems, equipment, or networks during and after exposure to radiation. While reporting their findings, a radiation engineer may suggest layouts, parts, and designs that meet requirements for operating under realistic levels of radiation.

How do you become a radiation engineer?

To become a radiation engineer, typically a bachelor's degree in nuclear engineering, health physics, or a related field is required. Gaining experience through internships and obtaining certifications such as the Certified Health Physicist credential can enhance job prospects. Strong knowledge of radiation safety, physics, and engineering principles is essential for this role.

What does a radiation engineer do?

A Radiation Engineer is a professional who studies and evaluates the effects of radiation on materials, electronics, and systems, particularly in environments such as space, nuclear facilities, or medical equipment. They design tests, conduct experiments, and develop methods to protect devices and people from harmful radiation. Their work is crucial for ensuring the safety and reliability of technology used in high-radiation environments. Radiation Engineers often collaborate with scientists, engineers, and regulatory agencies to develop guidelines and solutions.
More about Radiation Engineer jobs
What are the most commonly searched types of Radiation Engineer jobs in California? The most popular types of Radiation Engineer jobs in California are:
What are popular job titles related to Radiation Engineer jobs in California? For Radiation Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Radiation Engineer jobs in California look for? The top searched job categories for Radiation Engineer jobs in California are:
What cities in California are hiring for Radiation Engineer jobs? Cities in California with the most Radiation Engineer job openings:
What are popular job titles related to Radiation Engineer jobs in CA? For Radiation Engineer jobs in CA, the most frequently searched job titles are:
Radiation Engineer jobs near you
Infographic showing various Radiation Engineer job openings in California as of August 2026, with employment types broken down into 89% Full Time, and 11% Contract. Highlights an 100% In-person job distribution, with an average salary of $116,813 per year, or $56.2 per hour.

Radiation Shielding Engineer

Antares

Los Angeles, CA • On-site

$120K - $240K/yr

Full-time

Re-posted 6 days ago

Job description

About Us
At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We're fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we're building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space.
Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, The Air Force, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Los Alamos, Idaho, and Oak Ridge. Antares has raised over $600M in venture capital from top-tier investors and has over $13M in government funding.
About the Role
As a member of the Licensing and Safety Analysis team, you will be the responsible engineer for the characterization of radiation sources as well as the design and analysis of radiation shielding for reactor operation, shutdown conditions, as well as post operation transportation, storage, and disposition. You will apply best available analysis tools to characterize radiation sources from fission, activation, and decay. You will work as an integral member of the reactor and site design team to design and analyze the best available shielding configuration to meet customer requirements for a variety of deployment scenarios.
The ideal candidate has a mix of industry and academic experience and has worked in a team-oriented environment to develop nuclear technologies for real-world applications. While you may have an area of expertise, you're not afraid to operate as a generalist in a growing organization.
Roles and Responsibilities:
You will develop and provide expertise in a subset of the following:
  • Ownership of radiation shielding design and analysis
  • Development of trade studies of materials choices
  • Development of neutronics simulations to characterize radiation sources during operation and in post-operation configurations
  • Optimization of radiation shielding for deployment and post-operation transportation.
  • Engagement in regulatory requirement compliance strategies and application to licensing pathways.
  • Ensuring utilized tools and analyses are established and maintained in comliance with Antares quality assurance program.

Basic Qualifications:
  • Bachelor's degree in nuclear or mechanical engineering, physics, material science, or related field
  • 3+ experience with radiation shielding analysis and design
  • Proficiency in modern radiation shielding analysis tools, such as MCNP/ADVANTG, SCALE/MAVRIC, or similar Monte Carlo variance reduction tools
  • Ability to navigate regulatory requirements, shielding design features, analysis tools and manufacturing methods.

Preferred Skills & Experience:
  • Strong interpersonal and collaborative skills, enthusiasm for problem solving, and desire to modernize nuclear design and operation
  • Master's degree or PhD in nuclear engineering
  • Demonstrated track record of high impact in the achievement of team goals
  • Strong project management skills and effective communication of technical concepts across multi-disciplinary teams
  • Broad knowledge of nuclear interactions with material selections, especially for radiation shielding applications
  • Working knowledge of a programming language, preferably Python

Additional Requirements:
  • Ability to work long hours and weekends as necessary to support critical milestones
  • Ability to travel to regulatory locations as needed

Location
  • We are located in Torrance, CA in a 322,000 square foot, brand new facility featuring large open spaces for team collaboration, R&D, and production, as well as easy access to the 405, 105, and 110 freeways. Our facility is in the heart of Los Angeles' vibrant emerging tech ecosystem alongside many other high growth startups and enterprises.

Culture
At Antares, we like to specifically tie each role to our founding document's set of values-here are the top five cultural values we think you should believe at your core to be successful:
  • Think in Systems - Energy and Defense are complex ecosystems with numerous stakeholders with competing priorities, conflicting policies, perverse incentives, and emergent and path-dependent properties. First principles thinking alone is insufficient. Think probabilistically and then take action. "If you want to be certain, then you are apt to be obsolete." Over-optimizing the components often degrades the system
  • Obsess over the End User - The customer and end user are often not the same. We will never build globally competitive commercial products if we lose sight of our end users and their entire interaction with the product life cycle
  • Be Unconstrained by Convention - Our only limits are the laws of physics. Many, even experts, will say what we are working on is impossible. They said the same about SpaceX reusing rockets. Generationally impactful companies, by definition, must accomplish the seemingly impossible. If it were easy, it would have already been done. Never shy away from a solution because it has never been tried before, and never choose to do something because that's "how it's always been done"
  • Go Where the Work Is - Never miss a chance to meet a customer, user, or stakeholder face to face, even if that means hopping on a plane. If you can't make it, find a teammate who can channel your intentions and go in your place. Deep work can be done from anywhere, but we believe teams are built in person, and aim to maximize our time together
  • Operate in the Grey - Embrace nuance in pursuit of truth. Question every fundamental assumption

Equal Opportunity
Antares is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.
ITAR Requirements
To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.

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