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Job Title: Senior systems Administrator - TS/SCI with Polygraph
Company Name: General Dynamics IT
Location: Chantilly, VA
Position Type: Full Time
Post Date: 03/12/2026
Expire Date: 04/12/2026
Job Categories: Engineering, Information Technology
Job Description
Senior systems Administrator - TS/SCI with Polygraph

Advance how our customers operate while you advance your career. Join GDIT as a Systems Administrator Senior and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

Meaningful Work and Personal Impact
As a Systems Administrator Senior, the work youll do at GDIT will be impactful to the mission of our intelligence customer in Chantilly, VA. You will play a crucial role in supporting our award-winning Insider Threat Detection mission.

  • Manages the organizations computer systems workflows and is responsible for the upkeep, configuration, and reliable operation of computer systems, including fixing network issues along with updating equipment and software
  • Provides technical support in the management of networks, software, hardware, configurations, and architectures
  • Troubleshoots moderately complex system hardware and software issues
  • Trains end users on the proper use of hardware and software
  • Performs software installations and upgrades to operating systems and layered software packages
  • Monitors and tunes systems to achieve optimum performance levels
  • Ensures workstation/server data integrity by implementing standard software and hardware solutions
  • Evaluates existing systems and assists with planning long-term strategies

What Youll Need to Succeed
Bring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:

  • Education: Bachelor's degree in Engineering, Computer Science, or other related analytical, scientific, or technical discipline
  • Experience: 3+ years of related experience
  • Technical skills: Experience with Windows Server and desktop administration, experience with Red Hat Enterprise Linux system administration, comfortable working in a multi-vendor network with a large variety of COTS applications, familiarity with layer 2 and 3 networking concepts, experience with AWS and/or Azure cloud environments
  • Security clearance level: TS/SCI w/ Poly (or eligibility)
  • US citizenship required
  • Role requirements: DoD 8570 IAT II Certification


GDIT is Your Place
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

  • Growth: AI-powered career tool that identifies career steps and learning opportunities
  • Support: An internal mobility team focused on helping you achieve your career goals
  • Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
  • Community: Award-winning culture of innovation and a military-friendly workplace


OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and youll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

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Contact Information
Company Name: General Dynamics IT
Website:https://www.gdit.com/careers/job/3cc3bd061/senior-systems-administrator-tssci-with-polygraph/?source=AutoAppend_HBCU
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