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Cornerstone Defense
Cornerstone Defense
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Hyattsville, MD
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Chantilly, VA
Annapolis Junction, MD
Reston, VA
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Cornerstone Defense
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Counterintelligence Campaign Lead (TS/SCI)
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Cornerstone Defense
Chevy Chase, MD
L7 Manager
July 1st, 2026
Advertising and Promotions Managers
National Security
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Data Exploiter with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L5 Senior
April 12th, 2026
Information Security Analysts
Computer Systems Design Services
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Software Engineer II with Security Clearance
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Cornerstone Defense
State College, PA
L6 Lead
April 16th, 2026
Software Developers
Computer Systems Design Services
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Software Engineer with Security Clearance
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Cornerstone Defense
Fairfax Station, VA
L6 Lead
May 29th, 2026
Software Developers
Computer Systems Design Services
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Python Developer with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L5 Senior
April 12th, 2026
Software Developers
Computer Systems Design Services
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Full Stack Software Developer with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L6 Lead
April 12th, 2026
Software Developers
Computer Systems Design Services
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Integration Developer
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Cornerstone Defense
Reston, VA
L6 Lead
July 3rd, 2026
Software Developers
Computer Systems Design Services
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Software Engineer with Security Clearance
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Cornerstone Defense
Aurora, CO
L6 Lead
April 12th, 2026
Software Developers
Computer Systems Design Services
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AV Programmer
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Cornerstone Defense
Herndon, VA
L5 Senior
July 4th, 2026
Software Developers
Computer Systems Design Services
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Expert System Administrator
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Cornerstone Defense
Hyattsville, MD
L6 Lead
July 4th, 2026
Network and Computer Systems Administrators
Computer Systems Design Services
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Cyber Software Engineer | TS/SCI w/ Poly | OCO & DCO Focus
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Cornerstone Defense
Baltimore, MD
L6 Lead
July 4th, 2026
Software Developers
Computer Systems Design Services
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Senior Cybersecurity Analyst: Government ATO Expert (TS/SCI)
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Cornerstone Defense
Reston, VA
L5 Senior
July 4th, 2026
Information Security Analysts
Other General Government Support
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Cyber Threat Hunter & Intelligence Analyst
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Cornerstone Defense
Fairfax, VA
L4 Mid
July 4th, 2026
Information Security Analysts
National Security
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Principal Cyber Software Test Engineer
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Cornerstone Defense
Chantilly, VA
L6 Lead
July 4th, 2026
Software Developers
Computer Systems Design Services
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Senior OpenShift Platform Engineer Cybersecurity & Cloud
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Cornerstone Defense
Reston, VA
L6 Lead
July 4th, 2026
Computer Systems Engineers/Architects
Computer Systems Design Services
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Network Engineer - TS/SCI Poly, Annapolis Junction
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Cornerstone Defense
Hyattsville, MD
L6 Lead
July 4th, 2026
Computer Network Architects
National Security
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Expert Network Engineer
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Cornerstone Defense
Hyattsville, MD
L6 Lead
July 4th, 2026
Network and Computer Systems Administrators
Computer Systems Design Services
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Voice Systems Engineer (VoIP & Telephony)
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Cornerstone Defense
Virginia, MN
L5 Senior
July 4th, 2026
Telecommunications Engineering Specialists
National Security
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Senior Information Systems Security Engineer (TS/SCI)
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Cornerstone Defense
Falls Church, VA
L6 Lead
July 4th, 2026
Information Security Engineers
Computer Systems Design Services
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Senior DevOps Engineer - AWS, TS/SCI w/ Poly
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Cornerstone Defense
Reston, VA
L6 Lead
July 4th, 2026
Software Developers
Computer Systems Design Services
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Software Engineer - Backend Solutions with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L5 Senior
April 12th, 2026
Software Developers
Computer Systems Design Services
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Technical Support Specialist with Security Clearance
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Cornerstone Defense
Dahlgren, VA
L4 Mid
April 12th, 2026
Computer User Support Specialists
National Security
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Korean Interpreter with Security Clearance
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Cornerstone Defense
Germantown, MD
L3 Junior
April 12th, 2026
Interpreters and Translators
Translation and Interpretation Services
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Senior Software Developer - TS/SCI with Poly
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Cornerstone Defense
Chantilly, VA
L5 Senior
July 4th, 2026
Software Developers
Computer Systems Design Services
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Interface Developer
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Cornerstone Defense
Springfield, VA
L5 Senior
July 4th, 2026
Software Developers
Computer Systems Design Services
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Information Systems Security Manager
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Cornerstone Defense
McLean, VA
L4 Mid
July 8th, 2026
Security Management Specialists
Computer Systems Design Services
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MySQL DBA - TS/SCI Clearance, Performance & Migrations
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Cornerstone Defense
Hyattsville, MD
L5 Senior
May 5th, 2026
Database Administrators
Computer Systems Design Services
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Mission Integration Support
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Cornerstone Defense
McLean, VA
L5 Senior
May 4th, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
National Security
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Software Engineer 2 (Workflow Orchestration & Observability) with Security Clearance
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Cornerstone Defense
Hyattsville, MD
L6 Lead
May 4th, 2026
Software Developers
Computer Systems Design Services
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Tech CI Analyst with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L5 Senior
April 12th, 2026
Intelligence Analysts
National Security
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ETL Engineer with Security Clearance
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Cornerstone Defense
Reston, VA
L6 Lead
May 28th, 2026
Data Warehousing Specialists
Computer Systems Design Services
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Business Intelligence/Data Reporting Analyst with Security Clearance
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Cornerstone Defense
Reston, VA
L6 Lead
April 12th, 2026
Business Intelligence Analysts
National Security
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Data Scientist with Security Clearance
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Cornerstone Defense
Reston, VA
L5 Senior
April 12th, 2026
Data Scientists
Other Scientific and Technical Consulting Services
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Principal Integrated Product Team Lead with Security Clearance
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Cornerstone Defense
Indianapolis, IN
L6 Lead
April 12th, 2026
Project Management Specialists
National Security
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Full Stack Developer – Software Developer Expert with Security Clearance
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Cornerstone Defense
Reston, VA
L6 Lead
April 12th, 2026
Software Developers
Computer Systems Design Services
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Senior Software Engineer (Full-Stack) with Security Clearance
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Cornerstone Defense
Hyattsville, MD
L6 Lead
April 12th, 2026
Software Developers
Computer Systems Design Services
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Software Engineer Expert with Security Clearance
NEXT STEPS
Cornerstone Defense
Reston, VA
L6 Lead
April 12th, 2026
Software Developers
Computer Systems Design Services
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Software Developer with Security Clearance
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Cornerstone Defense
Gaithersburg, MD
L5 Senior
April 12th, 2026
Software Developers
Computer Systems Design Services
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Senior Network Engineer with Security Clearance
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Cornerstone Defense
Hyattsville, MD
L6 Lead
April 12th, 2026
Computer Network Architects
National Security
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Database Administrator - DBA2 with Security Clearance
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Cornerstone Defense
Hyattsville, MD
L5 Senior
May 11th, 2026
Database Administrators
Computer Systems Design Services
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