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Senior Systems Administrator (Australia) - TS/SCI with Polygraph
Company: General Dynamics IT
Location: Chantilly, VA
Employment Type: Full Time
Date Posted: 01/17/2026
Job Categories: Engineering, Information Technology
Job Description
Senior Systems Administrator (Australia) - TS/SCI with Polygraph

General Dynamics Information Technology (GDIT) is seeking an IT Engineer with Microsoft Enterprise Systems Administrator experience to join our team in support of a Federal Intelligence Agency contract. Primary responsibilities include providing Tier 2 support of maintaining multiple large Enterprise environment that spans CONUS and OCONUS boundaries. The supporting infrastructure includes multiple Microsoft based networks spanning multiple security enclaves within a hybrid (Windows & RHEL) environments.

Job Responsibilities & Duties:

  • System Administrative duties to include management of Windows and Linux workstations on EVDI and physical
  • Troubleshooting application functionality, crash and performance
  • Investigate user performance and work with external teams to improve user experience
  • Assist customers with Tier2 incident resolution for Linux and windows applications.
  • Provide remote end user desktop support
  • Identifies, analyzes, and resolves system incidents with both short-term workarounds and long-term solutions. Responds to escalated service desk/team requests.
  • Communicate effectively (in oral and written form) with a variety of individuals; work well within small and large team environments.
  • Participates in special projects as required.
  • Willingness to provide initial triage, response, and notifications for incidents

Required/Desired Skills:

Candidates should have 4-7 years related experience and knowledge/understanding of:

  • Active Directory Administration
  • DNS, DHCP, DFS, LDAP
  • Windows 10, Server 2012, Server 2016,
  • Application Troubleshooting such as Outlook, Excel, Word, JAVA, Internet Explorer
  • Linux Operating system
  • Understanding of Service Now, NETS or other ticketing process
  • ITIL v3 or higher

The following knowledge/skill set is not required but is a plus

  • Microsoft System Center Configuration Manager
  • PowerShell
  • Virtualization Environments (VMware, Citrix)
  • Profile management utilizing the VMware User Experience Management (UEM) toolset
  • Microsoft Exchange
  • Telephone/Video support
  • Networking
  • Familiarity with site specific customer and mission

  • Active TS/SCI with Polygraph required
  • Certification Requirement (required day 1) IAT II


GDIT Is Your Place:

  • 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

#GDITcareers#OpportunityOwned#WeAreGDIT#transitioningmilitary#clearedjobs#veterans#Autobots
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