Security Clearance Jobs in Reston, VA

PSG is looking to provide UNIX engineering and system administration for a satellite ground system sustainment program. Administer Solaris and Linux environments, automate routine work, and keep syste...

Join a Company Where Your Work Makes a DifferenceAt ISN, we believe our people are the driving force behind our success. For more than 45 years, we've partnered with over 150 federal agencies to deliv...

Your work days are brighter here.We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing p...

Your work days are brighter here.We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing p...

The application window is expected to close on: 11/19/2026 The application window is expected to close on November 20,2026 NOTE: Job posting may be removed earlier if the position is filled or if...

OverviewAllied Universal®, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and ...

Job Number: R0252331Nuclear Weapons AnalystThe Opportunity: Threats to our military are regularly evolving and becoming more complex. What if you could apply your proficiency to weaken these developin...

Job Number: R0253021Identity Provider AdministratorThe Opportunity:You know that the user is the last frontier for cybersecurity. It's where the peri met er is drawn, and securing identities is pivota...

Job Number: R0252972Site Reliability EngineerThe Opportunity: Engineering to make mission-critical systems more reliable, secure, and resilient enables users to focus on delivering operational outcome...

Job Number: R0252967IT Project ManagerThe Opportunity:As an IT Project Manager, you know the complexities of supporting a project from concept to completion. Many programs require a significant invest...

OverviewAre you passionate about building world-class, fast, scalable, environment support Azure Kubernetes Service (AKS) and Azure Container Registry (ACR) for Microsoft's sovereign and national cust...

Quantum Sky is hiring a Chief Scientist, AI/ML. You set the AI/ML technical bar for Project 137, and every team builds on your models, methods, and infrastructure. Reports to the Chief AI Officer. Ons...

About Agile DefenseAt Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spiri...

Application deadline: Nov 9, 2026This position requires that the candidate selected be a US Citizen and currently possess and maintain an active Top Secret security clearance with SCI eligibility or h...

ResponsibilitiesProvide on-site support to customer partner program as an integrated builder on a partner development teamDevelop and deploy AWS cloud architectures through CDK, IaC, CI/CD pipelines, ...

Geospatial Data Scientist & Quality Assurance EngineerHerndon, VirginiaTS/SCI with CI polyAt Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical...

High visibility. Enterprise‑wide impact.Our client is seeking aConcur Travel Consultant to support the design, configuration, implementation, integration, and optimization of SAP Concur Travel solutio...

Senior Executive Assistant to the CEO & General Counsel Reston, Virginia Must be a US citizen with the ability to obtain a Top Secret clearance @Orchard LLC is seeking an experienced EA to serve a...

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...

We are seeking a Sr. Information Systems Security Engineer (ISSE) II to join our dynamic team and play a pivotal role in safeguarding our organization's digital assets and sensitive information. The i...