IT Engineer - Microsoft Enterprise Systems Administrator Advisor, TS/SCI with Polygraph

General Dynamics Information Technology-posted 5 months ago
$115,256 - $155,934/Yr
Full-time • Mid Level
5,001-10,000 employees
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General Dynamics Information Technology (GDIT) is seeking a highly skilled IT Engineer with strong experience in both Microsoft Enterprise Systems and Linux administration to provide Tier II support for a large Federal Intelligence Agency. This role is part of a high-performing team that supports mission-critical infrastructure across multiple security enclaves and hybrid environments (Windows and RHEL). As a Tier 2 engineer, you will be responsible for advanced troubleshooting, user support, and system optimization for both Windows and Linux platforms, helping ensure consistent system performance and operational reliability.

  • Provide Tier II support for incident resolution and user issues in a mixed Windows/Linux enterprise environment.
  • Administer and support Windows workstations and servers (Windows 10, Server 2012/2016), including Active Directory, Group Policy, DNS, DHCP, and DFS.
  • Perform Linux system administration (RHEL, CentOS, Ubuntu), including user management, permissions, and basic performance diagnostics.
  • Troubleshoot application crashes, system performance issues, and connectivity problems.
  • Deliver remote and on-site end-user desktop support, resolving escalated technical issues effectively and efficiently.
  • Respond to service desk escalations using tools like ServiceNow or NETS; provide documentation and incident reporting.
  • Collaborate with external teams to analyze and improve end-user experience.
  • Participate in incident triage and real-time response efforts.
  • Engage in special projects and contribute to long-term solutions for recurring system issues.
  • Maintain compliance with DoD security standards, including DoD 8570 IA certification requirements.
  • Bachelor’s degree in Computer Science, Information Systems, or related field (or equivalent work/military experience).
  • Minimum 8+ years of experience in systems administration, with demonstrated Tier 2 support capabilities.
  • Active TS/SCI with Polygraph clearance.
  • Current DoD 8570 IAT Level II Certification (e.g., CompTIA Security+ CE, SSCP, or CCNA-Security).
  • Security+ CE preferred.
  • Must obtain the appropriate Computing Environment (CE) training within six (6) months of hire.
  • Microsoft SCCM
  • PowerShell scripting
  • VMware and Citrix virtualization
  • VMware User Experience Management (UEM)
  • Microsoft Exchange administration
  • Video conferencing and VoIP support
  • Networking fundamentals
  • Variety of medical plan options, some with Health Savings Accounts
  • Dental plan options
  • Vision plan
  • 401(k) plan with company match
  • Full flex work weeks where possible
  • Paid time off plans including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave
  • Short and long-term disability benefits
  • Life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance
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