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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HPC Linux Systems Engineer
HPC Linux Systems Engineer Oak Ridge, TN, US, 37831 Dec 31, 2025 0.00 mi
Oak Ridge, TN, US, 37831 Dec 31, 2025
Senior HPC Linux Systems Engineer
Senior HPC Linux Systems Engineer Oak Ridge, TN, US, 37831 Dec 31, 2025 0.00 mi
Oak Ridge, TN, US, 37831 Dec 31, 2025
Training Instructional Technologist
Training Instructional Technologist Oak Ridge, TN, US, 37830 Dec 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 31, 2025
Postdoctoral Research Associate - Integrated Photonics
Postdoctoral Research Associate - Integrated Photonics Oak Ridge, TN, US, 37830 Dec 29, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 29, 2025
Group Leader, Remote Sensing and Environmental Informatics
Group Leader, Remote Sensing and Environmental Informatics Oak Ridge, TN, US, 37830 Dec 27, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 27, 2025
Security Network Engineer
Security Network Engineer Oak Ridge, TN, US, 37830 Dec 26, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 26, 2025
Regulatory Affairs Lead
Regulatory Affairs Lead Oak Ridge, TN, US, 37830 Dec 26, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 26, 2025
Postdoctoral Research Associate - Computational Fluid Dynamics
Postdoctoral Research Associate - Computational Fluid Dynamics Oak Ridge, TN, US, 37830 Dec 26, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Dec 26, 2025
Postdoctoral Research Associate - Computational Methods for Kinetic Equations Oak Ridge, TN, US, 37830 Dec 26, 2025
Postdoctoral Research Associate - Computational Methods for Data Reduction Oak Ridge, TN, US, 37830 Dec 26, 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.