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

General Dynamics Information Technology

216d • $115,256 - $155,934

About The Position

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.

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.

Nice To Haves

• Microsoft SCCM
• PowerShell scripting
• VMware and Citrix virtualization
• VMware User Experience Management (UEM)
• Microsoft Exchange administration
• Video conferencing and VoIP support
• Networking fundamentals

Responsibilities

• 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.

Benefits

• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Bachelor's degree
• Number of Employees: 5,001-10,000 employees