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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Postdoctoral Research Associate - AI for Genomic Photosynthesis
Postdoctoral Research Associate - AI for Genomic Photosynthesis Oak Ridge, TN, US, 37830 Nov 15, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 15, 2025
UT-ORII Staff Fellow
UT-ORII Staff Fellow Oak Ridge, TN, US, 37830 Nov 14, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 14, 2025
IC Classified Computing, Group Leader
IC Classified Computing, Group Leader Oak Ridge, TN, US, 37830 Nov 14, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 14, 2025
Postdoctoral Research Associate - Application-driven Composable Distributed Storage Oak Ridge, TN, US, 37830 Nov 14, 2025
Postdoctoral Research Associate - HPC System Architecture and Intelligent Storage Design Oak Ridge, TN, US, 37830 Nov 14, 2025
Postdoctoral Research Associate - HPC Confidential Computing and Secure Multi-tenancy Oak Ridge, TN, US, 37830 Nov 14, 2025
Postdoctoral Research Associate - Tritium Breeding Blanket Analysis
Postdoctoral Research Associate - Tritium Breeding Blanket Analysis Oak Ridge, TN, US, 37830 Nov 13, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 13, 2025
Radioisotope Production Technical Professional
Radioisotope Production Technical Professional Oak Ridge, TN, US, 37830 Nov 13, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 13, 2025
Postdoc Research Associate- Atomic-Resolution Optical Spectroscopies w/Scanning Tunneling Microscopy Oak Ridge, TN, US, 37830 Nov 13, 2025
Postdoctoral Research Associate - Computation for Advanced Manufacturing
Postdoctoral Research Associate - Computation for Advanced Manufacturing Oak Ridge, TN, US, 37830 Nov 13, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Nov 13, 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.