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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Section Head - Accelerator Science and Technology
Section Head - Accelerator Science and Technology Oak Ridge, TN, US, 37830 Oct 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 31, 2025
Senior Machine Design Engineer
Senior Machine Design Engineer Oak Ridge, TN, US, 37830 Oct 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 31, 2025
Cyber Automation Engineer (Hybrid Eligible)
Cyber Automation Engineer (Hybrid Eligible) Oak Ridge, TN, US, 37830 Oct 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 31, 2025
Cyber Vulnerability Engineer (Hybrid Eligible)
Cyber Vulnerability Engineer (Hybrid Eligible) Oak Ridge, TN, US, 37830 Oct 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 31, 2025
Postdoctoral Research Associate - Sensor Network Optimization
Postdoctoral Research Associate - Sensor Network Optimization Oak Ridge, TN, US, 37830 Oct 31, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 31, 2025
Postdoctoral Research Associate
Postdoctoral Research Associate Oak Ridge, TN, US, 37830 Oct 30, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 30, 2025
Postdoctoral Research Associate - Theoretical Nuclear Physics
Postdoctoral Research Associate - Theoretical Nuclear Physics Oak Ridge, TN, US, 37830 Oct 30, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 30, 2025
Human and Organizational Performance Manager
Human and Organizational Performance Manager Oak Ridge, TN, US, 37830 Oct 30, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 30, 2025
Cyber Governance Information Systems Security Officer (ISSO) (Hybrid Eligible) Oak Ridge, TN, US, 37830 Oct 30, 2025
Senior Stable Isotope Materials Research Professional
Senior Stable Isotope Materials Research Professional Oak Ridge, TN, US, 37830 Oct 29, 2025 0.00 mi
Oak Ridge, TN, US, 37830 Oct 29, 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.