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Background in one or more of the following: nuclear engineering and reactor physics, safeguards and nonproliferation including IAEA, NRC or equivalent and export control, health physics and radiation safety, radiochemistry, or military and government nuclear service. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

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Nuclear & Radiological Safety Expert

FEED

Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. You will be responsible for the design of a large portion of the test campaign, which includes providing analysis to verify that the proposed testing is both safe and meets the test’s objectives.

Radiant Industries

Nuclear Engineer, Core Physics

ea_via_bold

Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.

Radiant Industries Inc

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. The Antares team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, Rigetti Computing, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Idaho, Oak Ridge, Los Alamos, and Savannah River.

Antares

Nuclear Engineer I/II

Nuclear Engineer II

This role combines people leadership with hands-on technical ownership across core physics, neutron and radiation transport, shielding, activation and dose, thermal-hydraulics, safety analysis, instrumentation and controls, operations, and regulatory evaluations. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Principal Nuclear Engineer

Ownership of sensor and instrumentation design and analysis, examples include: Radiation Detection: Design, specify, and qualify in-core and ex-core detector systems (fission chambers, ion chambers, and other detector technologies) for neutron flux and radiation monitoring. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases.

Nuclear Engineer, Sensors

Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. This may include nuclear engineering areas such as radiation shielding, criticality safety, accident dose consequence, reactor physics modeling and design, transient analysis, and radiation detection.

Nuclear Engineer

Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. 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 custom-made Digital Twin simulation software.

Senior Nuclear Engineer

Internship experience in nuclear licensing, regulatory affairs, or a related technical role, especially projects involving nuclear or highly regulated facilities. You'll collaborate with experienced engineers to support licensing actions, regulatory submissions, and engagement with regulatory authorities for a nuclear fuel cycle facility.

General Matter

Nuclear Engineer (New Grad)

Radiant Nuclear

Ownership of sensor and instrumentation design and analysis, examples include: Radiation Detection : Design, specify, and qualify in-core and ex-core detector systems (fission chambers, ion chambers, and other detector technologies) for neutron flux and radiation monitoring. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases.

Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites. This may include nuclear engineering areas such as radiation shielding, criticality safety, accident dose consequence, reactor physics modeling and design, transient analysis, and radiation detection.

Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.

2027 New Graduate - Nuclear Engineer

In this role, we expect people to be willing or able to lead others who use modern tools: You are expected to lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs. Leaders in these roles often direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.

Nuclear Engineer Jobs in El Segundo, CA

Nuclear & Radiological Safety Expert Jobot

Nuclear Engineer, Core Physics Radiant Industries

Nuclear Engineer, Core Physics Radiant Industries Inc

Nuclear Engineer I/II Antares

Nuclear Engineer II Antares

Principal Nuclear Engineer Radiant Industries

Nuclear Engineer, Sensors Radiant Industries Inc

Nuclear Engineer Radiant Industries Inc

Senior Nuclear Engineer Radiant Industries Inc

Senior Nuclear Engineer Antares

Nuclear Engineer (New Grad) General Matter

Nuclear Engineer, Core Physics Radiant Nuclear

Nuclear Engineer, Sensors Radiant Industries

Nuclear Engineer Radiant Industries

Senior Nuclear Engineer Radiant Industries

2027 New Graduate - Nuclear Engineer Radiant Industries

Lead Mechanical Engineer 2 (Nuclear Plant Analysis) Nuclear Sargent & Lundy LLC

Nuclear Engineer, Sensors Radiant Nuclear

Nuclear Engineer Radiant Nuclear

2027 New Graduate - Nuclear Engineer Radiant Nuclear

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