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

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: IT Help Desk, Linux, Microsoft (MS) Active Directory (AD), System Administration, Windows 10 Certifications: None Experience: 5 years of related experience US Citizenship Required: Yes Job Description: 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. Key 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. Basic Qualifications: 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. Required Technical Skills & Knowledge: Windows operating systems (Windows 10, Server 2012/2016) Linux administration (RHEL/CentOS/Ubuntu) Active Directory, DNS, DHCP, DFS, LDAP Troubleshooting Microsoft Office applications (Outlook, Excel, Word), Java, and web browsers Familiarity with ITSM tools such as ServiceNow Strong verbal and written communication skills Understanding of ITIL v3 or higher Preferred/Bonus Skills: Microsoft SCCM PowerShell scripting VMware and Citrix virtualization VMware User Experience Management (UEM) Microsoft Exchange administration Video conferencing and VoIP support Networking fundamentals #GDITcareers #OpportunityOwned #WeAreGDIT #transitioningmilitary #clearedjobs #veterans #Autobots The likely salary range for this position is $115,256 - $155,934. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: None Telecommuting Options: Onsite Work Location: USA VA Fort Belvoir - Fort Belvoir (VAC053) Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans Join our 30,000 everyday heroes. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. 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Salary : $115,256 - $155,934