Security Clearance Jobs in Mc Lean, VA

Job Description Spiral Solutions & Technologies, Inc. (SS&T) is seeking a Strategic Bomber Subject Matter Expert (SME) to support the United States Strategic Command (USSTRATCOM) Joint Exercises, Trai...

Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-B...

Senior-level Data Architect/SME supporting a customer mission focused on data acquisition, exploitation, engineering, and management. The role works across data engineering, software engineering, secu...

Company OverviewBy Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whateve...

AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Pro...

AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Pro...

We are seeking a hands-on Systems Engineer (SME) with deep expertise across infrastructure, platforms, and application ecosystems spanning cloud and on-premises environments. This role requires a prov...

Position Description: Software Engineer [TS/SCI + FSP] REQUIRED SKILLS Software Engineering • Demonstrated experience in technical project management with full lifecycle software development. • Demo...

Job DescriptionSupport our client with program management tasks including status tracking, scheduling, coordination, and risk management. Provide accurate and timely technical and programmatic report...

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...

Job Category: IT Infrastructure and OperationsRequisition Number: SYSTE002292Apply nowPosting Details Posted: September 8, 2026 Full-Time On-site Locations Showing...

Careers at Customer Service Support Specialists REQUIRED: Active TS/SCI with Full Scope PolygraphLOCATION: Full-time onsite in Tyson's Corner, VAAs a Customer Service Suppor...

Dezign Concepts LLCData Scientist - OpenLakeData and Knowledge Management - McLean, VA - Full TimeDezign ConceptsData Scientist – OpenLakeDevelop AI/ML solutions that help answer intelligence question...

Dezign Concepts LLCAI/ML Engineer - OpenLakeApplication & Software Development - McLean, VA - Full TimeAI/ML Engineer – OpenLakeBuild scalable AI/ML solutions, data pipelines, and web applications...

OverviewCompany Overview: Allied Universal®, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynam...

OverviewCompany Overview: Allied Universal®, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynam...

Amentum is seeking a Task Manager to support our customer onsite in McLean, VA. Supports Senior executive-led organizations at the Director level Receives tasking via multiple vehicles and systems Pr...

R-00192560Description Leidos Intelligence Group is seeking a Data Scientist with a strong understanding of various data complexities and experience managing data backlogs and analyzing the data and re...

Job Number: R0246002Nuclear Policy Analyst The Opportunity: As a nuclear analyst, you're passionate about the safe, efficient, and compliant operation of nuclear facilities, programs, and policies . W...

Job Number: R0248721Operations Research AnalystThe Opportunity:As an operations analyst, you're passionate about exploring the root cause of an issue and then analyzing, reporting, and developing reco...