National Security Jobs

National Security

Protecting U.S. citizens through discovery and innovation

The National Security Sciences Directorate leads scientific and technological breakthroughs to confront some of the nation’s most difficult security challenges. We develop applications needed for the security of our nation today and target our vision on how these challenges may manifest themselves in a decade or more.

Our research and development focuses on cybersecurity and cyber physical resiliency, data analytics, geospatial science and technology, nuclear nonproliferation, and high-performance computing for sensitive national security missions. We also enhance ORNL contributions to national security challenges by working closely with leading researchers at the lab in areas such as nuclear and chemical sciences and engineering, applied materials, advanced manufacturing, biosecurity, transportation, and computing.

 

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National Security

Protecting U.S. citizens through discovery and innovation

ORNL’s strengths in advanced materials, nuclear science, and supercomputing are addressing complex national security challenges in the areas of nuclear nonproliferation, national defense, homeland protection, and intelligence.

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Senior HPC Linux Systems Engineer
Senior HPC Linux Systems Engineer Oak Ridge, TN, US, 37830 Sep 24, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 24, 2025
Postdoctoral Research Associate - Geothermal Energy Techno-Economic Analysis for Roadmap Extension Knoxville, TN, US, 37932 Sep 23, 2025
Information Systems Security Officer
Information Systems Security Officer Oak Ridge, TN, US, 37830 Sep 23, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 23, 2025
Alston S. Householder Fellowship: Mathematics and Scientific Computing
Alston S. Householder Fellowship: Mathematics and Scientific Computing Oak Ridge, TN, US, 37830 Sep 23, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 23, 2025
Postdoctoral Research Associate- Polymer Chemist
Postdoctoral Research Associate- Polymer Chemist Oak Ridge, TN, US, 37830 Sep 22, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 22, 2025
Postdoctoral Research Associate - Diffuse Neutron Scattering and Diffraction Development & Analysis Oak Ridge, TN, US, 37830 Sep 22, 2025
Fire Protection Inspector
Fire Protection Inspector Oak Ridge, TN, US, 37830 Sep 22, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 22, 2025
Sol-Gel Materials Synthesis Technician
Sol-Gel Materials Synthesis Technician Oak Ridge, TN, US, 37830 Sep 22, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 22, 2025
Associate Laboratory Director, Biological and Environmental Systems Sciences Oak Ridge, TN, US, 37830 Sep 22, 2025
DoD SkillBridge Military Intern
DoD SkillBridge Military Intern Oak Ridge, TN, US, 37830 Sep 21, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 21, 2025

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Oak Ridge National Laboratory is managed by UT-Battelle for the Department of Energy.

ORNL is an equal opportunity employer; learn more. All qualified candidates, including individuals with disabilities and protected veterans, are encouraged to apply. ORNL is an E-Verify employer; learn more. If you have difficulty using the online application system or need accommodation to apply due to a disability, please email: ORNLRecruiting@ornl.gov.