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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Group Leader - HFIR Mechanical Systems Engineering
Group Leader - HFIR Mechanical Systems Engineering Oak Ridge, TN, US, 37830 Mar 17, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 17, 2026
Talent Acquisition Partner (Hybrid Eligible)
Talent Acquisition Partner (Hybrid Eligible) Oak Ridge, TN, US, 37830 Mar 17, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 17, 2026
Commercialization Manager
Commercialization Manager Oak Ridge, TN, US, 37831 Mar 17, 2026 0.00 mi
Oak Ridge, TN, US, 37831 Mar 17, 2026
Health & Safety Professional - Field Support
Health & Safety Professional - Field Support Oak Ridge, TN, US, 37830 Mar 17, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 17, 2026
Construction Field Representative
Construction Field Representative Oak Ridge, TN, US, 37830 Mar 17, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 17, 2026
Senior Nuclear Electrical, Instrumentation and Controls Engineer
Senior Nuclear Electrical, Instrumentation and Controls Engineer Oak Ridge, TN, US, 37830 Mar 16, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 16, 2026
Quality Representative
Quality Representative Oak Ridge, TN, US, 37830 Mar 16, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 16, 2026
FFESD Chief Operating Officer
FFESD Chief Operating Officer Oak Ridge, TN, US, 37830 Mar 16, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 16, 2026
Section Head - Integrative Computational Biosciences
Section Head - Integrative Computational Biosciences Oak Ridge, TN, US, 37830 Mar 15, 2026 0.00 mi
Oak Ridge, TN, US, 37830 Mar 15, 2026
Senior HPC Linux Systems Engineer (E)
Senior HPC Linux Systems Engineer (E) Oak Ridge, TN, US, 37831 Mar 14, 2026 0.00 mi
Oak Ridge, TN, US, 37831 Mar 14, 2026

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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.