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Senior System Administrator - TS​/SCI Polygraph

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: General Dynamics - IT
Full Time position
Listed on 2026-06-02
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below
Position: Senior System Administrator - TS/SCI with Polygraph

Senior Systems Administrator

Transform technology into opportunity as a Senior Systems Administrator with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.

Job Duties
  • Plans, designs, and implements infrastructure changes and system upgrades.
  • Manages and troubleshoots multiple VMware environments.
  • Provides Windows Server and Linux administration, maintenance, and troubleshooting.
  • Creates STIG compliant images for Windows Desktop, Windows Server, and Linux OS.
  • Creates, tests, and deploys software packages using software deployment products such as SCCM, PDQ, etc.
  • Provides expert level support and mentoring for Mid and Junior Systems Administrator personnel.
  • Develops and maintains installation and configuration procedures for system and software changes.
  • Utilizes scripting to automate common tasks.
  • Performs hardware maintenance/repair activities.
  • Ensures proper planning and execution of major projects/maintenance activities.
  • Provides advanced level administration and troubleshooting of Active Directory, GPO, DNS, DHCP, and Domain Controllers.
Required Qualifications
  • Ability to write scripts using Power Shell and/or Bash.
  • Experience managing VMware, Nutanix, and other types of enterprise level Virtual Infrastructures.
  • Proficient in managing and troubleshooting Active Directory and Group Policy Object (GPO).
  • At least 8 years of relevant experience.
  • Security+ Certified.
  • Must presently be 8570 compliant (IAT Level 2 preferred).
  • Bachelor of Arts/Bachelor of Science in a field applicable to this work.
  • US Citizenship Required.
  • TS/SCI with Polygraph Desired.
  • Linux OS (CentOS, RHEL) administration.
  • Satellite server administration.
  • Ansible playbook writing.
  • Implementing STIGs.
  • Experience supporting a software configuration management and development environment.
Benefits
  • 401K with company match.
  • Comprehensive health and wellness packages.
  • Internal mobility team dedicated to helping you own your career.
  • Professional growth opportunities including paid education and certifications.
  • Cutting-edge technology you can learn from.
  • Rest and recharge with paid vacation and holidays.
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Position Requirements
10+ Years work experience
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