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 - Grid Modeling
Postdoctoral Research Associate - Grid Modeling Knoxville, TN, US, 37932 Sep 15, 2025 0.00 mi
Knoxville, TN, US, 37932 Sep 15, 2025
Senior R&D Staff Member - Plasma Material Interactions (PMI) Science Lead Oak Ridge, TN, US, 37830 Sep 14, 2025
Artificial Intelligence Developer (Hybrid)
Artificial Intelligence Developer (Hybrid) Oak Ridge, TN, US, 37830 Sep 14, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 14, 2025
Artificial Intelligence Software Engineer (Hybrid)
Artificial Intelligence Software Engineer (Hybrid) Oak Ridge, TN, US, 37830 Sep 14, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 14, 2025
DevOps Engineer (Hybrid)
DevOps Engineer (Hybrid) Oak Ridge, TN, US, 37830 Sep 13, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 13, 2025
Research Scientist in Neuromorphic Computing
Research Scientist in Neuromorphic Computing Oak Ridge, TN, US, 37830 Sep 12, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 12, 2025
Postdoctoral Research Associate - Computational Chemist
Postdoctoral Research Associate - Computational Chemist Oak Ridge, TN, US, 37830 Sep 12, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 12, 2025
Postdoctoral Research Associate - Integrated Quantum Photonics Fabrication and Design Oak Ridge, TN, US, 37830 Sep 12, 2025
Cyber Digital Investigator & National Security Liaison
Cyber Digital Investigator & National Security Liaison Oak Ridge, TN, US, 37830 Sep 12, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Sep 12, 2025
Postdoctoral Research Associate - Multiscale Excitonic Probes for Interface Studies Oak Ridge, TN, US, 37830 Sep 11, 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.