Security Clearance Jobs in Mc Lean, VA

Must be a US Citizen who currently possesses a Secret Clearance. This is a onsite position and must be onsite 5 days a week. Position Description: The team provides A&AS support to the A4 (Logistics,...

The application window is expected to close on: 2/13/2026Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received.The successful applicant wi...

DescriptionJob Title: Appian System Administrator - TS/SCI FSP Required (TS/SCI FSP Required)Position Type: Full-Time, Direct HireClearance: Active TS/SCI with Full Scope Polygraph (FSP) - Required D...

Valiant is looking for a Junior Contract Support Assistants (CSA) to join our team! In this role you will handle administrative tasks and transactions for USG acquisition officers located in contracti...

Valiant is looking for a Contract Suport Assistant (CSA) to join our team! In this role you will handle administrative tasks and transactions for USG acquisition officers located in contracting office...

Valiant is looking for a Mid-Level Contract Support Assistants (CSA) to join our team! In this role you will handle administrative tasks and transactions for USG acquisition officers located in contra...

Description SAIC is seeking an IT Systems Analyst to to perform full lifecycle duration data management and conduct system administration and maintenance on a stand-alone network. This position is ...

The Sponsor's office supports a global analysis mission that has a focus on transnational organized crime. The Sponsor's office supports analysts with a broad array of technical skills and subject mat...

Position Title: Cleared Senior Power Platform Developer (TS/SCI with Poly) Location: Tysons, VA or Bethesda, MD (Onsite) Clearance Requirements: Active TS/SCI with Full Scope Polygraph (FSP) Position ...

We are looking for an entry level IT Security Analyst summer intern to perform the day-to-day operations of the security solutions and use these solutions to identify, investigate and resolve security...

Amentum is looking for a Turbine Generator Mechanic to join our team in McLean, VA! As a Turbine Generator Mechanic, you will inspect, repair, adjust, test, and replace parts as required on assigned t...

JOB FUNCTION: Inspect, repair, replace, install, adjust, maintain, and make necessary tests on all medium and low voltage 15KV, 4160V, 480V and 208V utility systems, equipment, motors, MCC panels, gen...

Amentum is seeking Utility Cleaners with an active Top Secret security clearance to join our team in McLean, VA! As a Utility Cleaner, you will be responsible for the cleanliness of communal spaces, r...

Amentum is seeking an Electrician (Night Shift) to join our team in McLean, VA! As an Electrician, you will inspect, repair, replace, install, adjust, maintain, and make necessary tests on all electri...

Purpose/ScopeAmentum is looking for a Reliability Engineer to perform a variety of engineering assignments in planning and overseeing research, development, design, manufacture, test, installation, op...

Job Number: R0235007Data ArchitectThe Opportunity:For an organization to succeed in today's operational environments, espe cia lly within the Intelligence, Surveillance, and Reconnaissance ( ISR ) dom...

OverviewVTG is seeking a Program Manager to oversee all aspects of Task Order execution, including staffing, stakeholder engagement, and adherence to SLAs. What will you do? Leads planning, execution...

Job Number: R0234884Full-Stack Software EngineerThe Opportunity: Are you looking for an opportunity to not just develop sof tware, but to design a system that will provide cutting-edge intelligence, s...

Job Number: R0234879Full Stack Software Engineer, SeniorThe Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you'r...

R-00177146Description Leidos is seeking a Senior FOIA Analyst to support an Intelligence Community (IC) program in McLean, VA. An Active TS/SCI with polygraph security clearance is required up front t...