Windows Linux Systems Administrator - TS/SCI with Polygraph

General Dynamics Information Technology
Fort Belvoir, VA
Public Trust: None
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

General Dynamics Information Technology (GDIT) is looking for a skilled IT Systems Administrator with experience in Microsoft enterprise environments to support a critical Federal Intelligence Agency contract. This is an excellent opportunity to work alongside a highly skilled technical team in a dynamic and mission-focused environment.

In this role, you’ll provide Tier II support and systems administration across multiple large-scale Microsoft-based networks spanning several secure environments. The infrastructure consists of a hybrid mix of Windows and Red Hat Enterprise Linux (RHEL) systems.

Key Responsibilities:

  • Perform administrative support for both Windows and Linux environments on physical systems and virtual desktops (EVDI).

  • Troubleshoot system and application issues, including performance degradation and crashes.

  • Investigate and resolve user performance concerns; collaborate with other teams to enhance the end-user experience.

  • Provide Tier II support and resolution for incident tickets related to Windows and Linux-based applications.

  • Offer remote desktop support to end users.

  • Analyze and resolve system incidents with both immediate workarounds and long-term fixes.

  • Respond to and manage escalated service desk tickets.

  • Communicate clearly with team members and stakeholders, both verbally and in writing.

  • Participate in special projects and respond to security incidents as needed.

Qualifications:

  • Bachelor’s degree in Computer Science, Engineering, or a related technical field, OR equivalent combination of education and experience (including military service).

  • 3+ years of relevant systems administration experience.

  • Active TS/SCI clearance with Polygraph is required.

  • Must have a current DoD 8570 IA certification (e.g., CompTIA Security+ CE , SSCP, or CCNA-Security). Security+ CE is preferred.

  • Must obtain required DoD 8570 Computing Environment (CE) certification within 6 months of hire.

Required Technical Skills & Experience:

  • Active Directory administration

  • DNS, DHCP, DFS, and LDAP

  • Windows 10, Server 2012, Server 2016

  • Troubleshooting common business applications (e.g., Outlook, Excel, Word, Java, Internet Explorer)

  • Linux system administration

  • Familiarity with ticketing systems such as ServiceNow or NETS

  • ITIL v3 certification or higher

Preferred (Nice to Have):

  • Microsoft System Center Configuration Manager (SCCM)

  • PowerShell scripting

  • Experience with virtualization tools such as VMware and Citrix

  • VMware User Experience Management (UEM)

  • Microsoft Exchange administration

  • Experience with voice/video systems

  • Networking fundamentals

  • Familiarity with customer mission environments

#Autobots

Work Requirements

Years of Experience

3 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

CompTIA Security+ - CERTIFICATION - CERTIFICATION

Travel Required

None

Citizenship

U.S. Citizenship Required

Posted 2025-11-09

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