Security Clearance Jobs in Herndon, VA

Job Number 735234BR Description:The Proposal Writer, Sr will apply proven writing and communications skills to support the development of compelling narratives through drafting, messaging, and qualit...

Job Number 735244BR Description:By bringing together people that use their passion for purposeful innovation, at Lockheed Martin we keep people safe and solve the world's most complex challenges. Our...

Bring your classified-environment experience to a team where customer service, trust, and teamwork drive success. 💼 The Role We are seeking a Personnel Security Administrator (PSA) to join a fast-pac...

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...

Job Number: R0245084Software Developer, Senior The Opportunity: As a sof tware sustainment engineer, you play a pivotal role in an application's functional life. From troubleshooting to fixing bugs, y...

Title: DevOps Systems Engineer Location: Herndon, VA *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense, in partnership with our military, intelligen...

Title: Information Systems Security Engineer Location: Herndon, VA *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense, in partnership with our milita...

DescriptionApplication deadline: Jul 27, 2026 This position requires that the candidate selected be a US Citizen and obtain and maintain an active TS/SCI security clearance with polygraph. The Amazon ...

Deliver simple solutions to complex problems as a Cloud Engineer at GDIT. Here, you'll tailor cutting-edge solutions to the unique requirements of our clients. With a career in application development...

Deliver simple solutions to complex problems as a Cloud Engineer at GDIT. Here, you'll tailor cutting-edge solutions to the unique requirements of our clients. With a career in application development...

DEVOPS ENGINEER PRINCIPALTransform technology into opportunity as a DevOps Engineer Principal at GDIT. Shape what's next for mission-critical government projects while shaping what's next for your eng...

Own the opportunity as a Scrum Master and help ensure the mission is never interrupted. At GDIT, we deliver clarity with our cloud solutions and provide meaningful work. Your work will be an important...

Transform technology into opportunity as a Software Developer at GDIT. Shape what's next for mission-critical government projects while shaping what's next for your engineering career.MEANINGFUL WORK ...

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world's most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the bou...

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world's most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the bou...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Conduct penetration testing and ethical hacking to assess and exploit vulnerabil...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Conduct penetration testing and ethical hacking to assess and exploit vulnerabil...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Design, develop, and maintain complex systems spanning multiple network fabrics ...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Manage and maintain complex software applications using a diverse technology sta...

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Manage and maintain complex software applications using a diverse technology sta...