Security Clearance Jobs in Herndon, VA

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Perform large-scale parallel processing of data. • Utilize a diverse set ...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Perform large-scale parallel processing of data. • Utilize a diverse set ...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Oversee and manage applications infrastructure and ensure application security c...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Develop comprehensive full stack software solutions throughout the entire cloud-...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Oversee and manage applications infrastructure and ensure application security c...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Develop comprehensive full stack software solutions throughout the entire cloud-...

The Sponsor's office designs and implements enterprise network architectures supporting mission- critical systems, including WAN, LAN, firewalls, VoIP, video engineering, data centers, and network sec...

Systems Engineer-IT - TS//SCI with CI Poly to start Work Location: Herndon, VA DevOps Engineer familiar with Unix/Linux/SE for our Data Centric-Multi-Level Secure® (DC-MLS®) Enterprise team. The DC[...

Two System Administrators positions open!! **First position** Systems Administrator - TS//SCI with CI Poly to start Work Location: Littleton, CO / Valley Forge, King of Prussia, PA / Herndon, VA / ...

The Swift Group is a privately held, mission-driven and employee-focused services and solutions company headquartered in Reston, VA. Our capabilities include Software Development, Engineering & IT, Da...

The Swift Group is a privately held, mission-driven and employee-focused services and solutions company headquartered in Reston, VA. Our capabilities include Software Development, Engineering & IT, Da...

REQUIRED: Active TS/SCI with Full Scope Polygraph clearanceLOCATION: Full-time, onsite in Herndon, VA We are seeking a skilled Network Engineer who excels at designing, implementing, and troubleshooti...

The Sponsor's office is responsible for the design and implementation of enterprise network architectures. This includes, but is not limited to, the wide area network, local area network, firewalls, v...

DescriptionApplication deadline: Mar 21, 2026This position requires that the candidate selected be a US Citizen and obtain and maintain an active TS/SCI security clearance with polygraph.The Amazon We...

About PeratonPeraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading m...

About PeratonPeraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading m...

About PeratonPeraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading m...

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what's happening now and shape what's coming next. Vantor is a place for problem solvers, ch...

R-00178469Description The Homeland Sector within Leidos is seeking a Lead Software Engineer to support a UK effort focused on maximizing the public safety benefits of fingerprints and facial matching....

R-00178213Description Leidos   was awarded   the U.S. Air Force Cloud One Architecture and Common Shared Services contract and   currently has   an opening for a   Project
...