Security Clearance Jobs in Gaithersburg, MD

Date Posted:2026-08-28Country:United States of America Location:US-MA-TEWKSBURY-TB4 ~ 836 North St ~ INNOVATION BLDG Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Require...

This position requires an ACTIVE DoD security clearance. Applicants who do not currently hold an active clearance will not be considered.At PMAT, we work on mission critical systems that directly supp...

R-00191904Description Join a Mission That Matters!Are you a highly skilled Software Engineer ready to tackle complex technical challenges that directly support our nation’s intelligence mission?...

R-00191695Description Are you ready to build software that makes a real-world impact? Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program supporting an Inte...

R-00191202Description Leidos is seeking an Engineering People Manager to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Leidos Common Automation Platf...

DevSecOps Engineer We are seeking a Mid-Level DevSecOps Engineer to support a national security program focused on delivering secure, scalable, and rapidly deployable systems. This role supports CI/C...

GEOINT Senior Systems Engineer Location: Gaithersburg, MD Required Clearance: Active TS/SCI with Polygraph Eligibility Employment Type: Full-Time Regular Shift: Day Travel: No Relocation Assistan...

Mid-Level DevSecOps Engineer Location: Gaithersburg, MD Required Clearance: Active TS/SCI with Polygraph Eligibility Employment Type: Full-Time Regular Shift: Day Travel: No Relocation Assistance:...

Mid-Level DevSecOps EngineerGaithersburg, MDActive TS (SCI eligibility) clearance and eligibility to obtain a CI polyAt Bcore, our strength comes from how we deliver impact to the mission. Whether it’...

Senior Systems EngineerGaithersburg, MDActive TS (SCI eligibility) clearance and eligibility to obtain a CI polyAt Bcore, our strength comes from how we deliver impact to the mission. Whether it’s arc...

Software Engineer: Full Stack - Python, Java or JavaScript/TypeScript (TS/SCI Clearance Required)Gaithersburg, Maryland, United StatesApply***This job requires activeTS/SCI clearance. Please apply onl...

R-00190984Description Leidos is seeking a Systems Integration & Test Engineer to be based out of Gaithersburg, MD.This position will support the United Kingdom National Airspace System Replacement...

R-00190988Description Leidos is seeking a Systems Integration & Test Engineer to be based out of Gaithersburg, MDThis position will support the United Kingdom National Airspace System Replacement ...

R-00190827Description Looking for an opportunity to make an impact?At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers&...

R-00190919Description If you’ve been building your skills in backend development, object‑oriented programming, and mission‑driven engineering, and you’re ready for work that ac...

R-00190911Description Ready to design technology that makes a difference? At Leidos, you’ll help shape the future of intelligence operations by creating intuitive, high-impact user experience fo...

R-00190906Description Build the Documentation That Powers Mission-Critical IntelligenceThe Maru Program is seeking a Senior Technical Writer who thrives at the intersection of technology, mission, and...

R-00190912Description Engineering the Mission. Enabling Intelligence.Join Leidos and help shape the future of geospatial intelligence! We are seeking an experienced and innovative Senior Systems Engin...

R-00190905Description Leidos Intelligence Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to...

R-00190777Description Are you ready to shape how mission-critical technology is adopted across the Intelligence Community? Leidos is seeking a creative, collaborative, and mission-driven Senior Traini...