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.

 

Learn More

 

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.

Watch jobs in this category

Title Location Date Sort descending
Reset
DoD SkillBridge Military Intern
DoD SkillBridge Military Intern Oak Ridge, TN, US, 37830 Dec 17, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 17, 2025
Research Associate - Computational Condensed Matter Physics
Research Associate - Computational Condensed Matter Physics Oak Ridge, TN, US, 37830 Dec 17, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 17, 2025
Postdoctoral Research Associate - Urban Energy Modeling, Grid-interactive Controls Oak Ridge, TN, US, 37830 Dec 17, 2025
Radioisotope Production Technical Professional
Radioisotope Production Technical Professional Oak Ridge, TN, US, 37830 Dec 16, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 16, 2025
Nonproliferation Professional (Casual Part-time)
Nonproliferation Professional (Casual Part-time) Oak Ridge, TN, US, 37830 Dec 16, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 16, 2025
Postdoctoral Research Associate - AI for Genomic Photosynthesis
Postdoctoral Research Associate - AI for Genomic Photosynthesis Oak Ridge, TN, US, 37830 Dec 14, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 14, 2025
IC Classified Computing, Group Leader
IC Classified Computing, Group Leader Oak Ridge, TN, US, 37830 Dec 13, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 13, 2025
Research Scientist, AI for Science
Research Scientist, AI for Science Oak Ridge, TN, US, 37840 Dec 12, 2025 0.00 mi
Oak Ridge, TN, US, 37840 Dec 12, 2025
Senior Research Scientist, AI for Science
Senior Research Scientist, AI for Science Oak Ridge, TN, US, 37830 Dec 12, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 12, 2025
Postdoc Research Associate- Atomic-Resolution Optical Spectroscopies w/Scanning Tunneling Microscopy Oak Ridge, TN, US, 37830 Dec 12, 2025

JOIN OUR TALENT NETWORK

Enter your email address to tell us about yourself. We will keep you informed about job opportunities and events that match your interests.

Already a member?

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.