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Nuclear Engineer, Core Physics

El Segundo, Los Angeles County
2026-08-08T13:29:40Z

Position Details

Job Description Job Description About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, rem…
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Nuclear Engineer

El Segundo, Los Angeles County
2026-08-10T15:26:41Z

Position Details

About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. 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. R…
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Senior Nuclear Engineer

El Segundo, Los Angeles County
2026-08-12T10:13:30Z

Position Details

About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. 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. R…
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Nuclear Engineer (Entry Level)

El Segundo, Los Angeles County
2026-08-10T15:09:27Z

Position Details

Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. 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 uniqu…
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Nuclear Engineer - Radiological

Austin, Travis County
2026-08-13T01:36:58Z

Position Details

Job Description Job Description Last Energy seeks an experienced Radiological Engineer to support the safety and licensing analysis for the PWR-20 micro nuclear reactor. This person will work closely with the nuclear engineering and safety analysis staff to ensure that the PWR-20 design meets radiation safety and accident dose requirements. Key Duties & Responsibilities Determine core and coolant radiological source terms Determine neutron and gamma radiation fields Calculate the dose due to th…
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Principal Nuclear Engineer - TS/SCI Polygraph Required

Reston, Fairfax County
2026-08-12T20:49:36Z

Position Details

Leidos' Analysis Solutions business area is seeking a highly accomplished Principal Nuclear Engineer Subject Matter Expert (SME) to support critical national security missions in Reston, Virginia. This role offers the opportunity to apply advanced nuclear engineering expertise to some of the nation's most challenging counterproliferation and nuclear survivability problems. The successful candidate will lead technical assessments of foreign nuclear weapons infrastructure, reverse engineer protec…
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Nuclear Engineering Supervisor

Mansfield, Newton County
2026-07-25T18:26:38Z

Position Details

hackajob is collaborating with Emerson to connect them with exceptional professionals for this role. Description The Nuclear Engineering Supervisor leads a team of engineers supporting critical nuclear valve and product engineering activities in Mansfield, MA. This role is responsible for overseeing engineering execution, ensuring regulatory and quality compliance, and supporting manufacturing and customer needs across nuclear projects. The position plays a key role in driving technical excelle…
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Nuclear Licensing Engineer III

US
2026-08-12T15:45:23Z

Position Details

The Nuclear Licensing Engineer III is responsible for applying engineering and nuclear regulatory knowledge and experience in support of developing power plant systems and programs in accordance with US licensing requirements. This requires a demonstrated understanding of 10 CFR Parts 50 and 52, along with associated regulatory and industry guidance. The Nuclear Licensing Engineer will be part of the SMR 300 Nuclear Licensing group, which is responsible for understanding, interpreting and infor…
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Engineer, Sr Staff Fuels / Project Manager

Aurora, Kane County
2026-06-18T13:57:43Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Lockport, Will County
2026-06-18T13:57:42Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Bartlett, DuPage County
2026-06-18T13:57:40Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Elgin, Kane County
2026-06-18T13:57:45Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Yorkville, Kendall County
2026-06-18T13:57:40Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Batavia, Kane County
2026-06-18T13:57:45Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Warrenville, DuPage County
2026-06-18T16:03:04Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Bolingbrook, Will County
2026-06-18T13:57:40Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Plainfield, Will County
2026-06-18T13:57:42Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Northwoods, DuPage County
2026-06-18T13:57:40Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Fox Valley, DuPage County
2026-06-18T13:57:43Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
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Engineer, Sr Staff Fuels / Project Manager

Elburn, Kane County
2026-06-18T13:57:40Z

Position Details

Who We Are As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geother…
Apply Now