NCIS Windows Systems Administrator | Active Top Secret clearance

Transform technology into opportunity as a Windows Systems Administrator at GDIT. Shape what’s next for mission-critical government projects while shaping what’s next for your engineering career. The Naval Criminal Investigative Service (NCIS) is an organization of approximately 2,000 personnel, with 700 serving at HQ and the remaining staff at offices worldwide. NCIS is the Department of the Navy (DON) component with primary responsibility for criminal investigation, law enforcement (LE), counterterrorism (CT), counterintelligence (CI), and cyber matters.

About the role

As a Windows Systems Administrator, your work will directly impact the mission of the NCIS team at Quantico, VA.

Responsibilities

• Administer, manage, and maintain Windows Server 2019 and 2022.
• Perform Windows Server patching in an operational environment.
• Work with Domain controllers, Active Directory Federation Services (AD FS), Active Directory, DNS servers, DHCP, and Group Policy Object.
• Create, manage, and maintain accounts and groups in Active Directory and LDAP.
• Develop and utilize PowerShell scripting for automation and management tasks.
• Monitor system environments and resources.
• Analyze, troubleshoot, resolve, and document problems with business applications and hardware across all enclaves.
• Oversee system recovery mechanisms and resolve issues independently.
• Coordinate, communicate, and escalate required changes and major issues.
• Diagnose and resolve computer-related problems for employees and contractors, either in person or via remote control software.
• Respond to telephone calls and email requests for technical support.
• Accurately document all work in ServiceNow.
• Support Mobile Device Management (MDM) solutions.
• Administer user accounts and device associations in Active Directory.
• Deploy DISA STIGs controls and ensure system compliance.
• Install, operate, configure, and maintain multiple types of business and end-user-specific application software in a large government installation.

Requirements

• Active Top Secret clearance (must be TS/SCI eligible).
• 5+ years of experience with Windows Systems Administration, general computer system, network administration, and user support.
• Hands-on experience with Windows 11, Windows Server 2019, 2022, and 2025 configuration, troubleshooting, and performance optimization.
• Experience with NGEN IT infrastructure and enterprise-class networks.
• Experience with one or more of the following: Domain controllers, Active Directory, DNS servers, DHCP, and Group Policy Object.
• CompTIA Security+ CE certification.
• US Citizenship required.

Qualifications

• BS Degree or equivalent in Computer Science or a related IT field.

Skills

• Microsoft Windows Server
• Mobile Device Management (MDM)
• System Administration
• Windows System Administration
• PowerShell scripting
• Active Directory and LDAP management
• DISA STIGs compliance

Schedule

• Hybrid – 3 days onsite at Quantico, VA / 2 days remote.
• Scheduled Weekly Hours: 40.

Pay

The likely salary range for this position is $93,662 - $108,100.

Benefits

• Comprehensive medical, dental, and vision plan options, some with Health Savings Accounts.
• 401(k) plan with company match (pre and post-tax contributions up to IRS annual limits).
• Full-flex work weeks where possible.
• Paid time off plans including vacation, sick, personal time, holidays, parental leave, military leave, bereavement, and jury duty leave.
• Short and long-term disability benefits, life insurance, accidental death and dismemberment, personal accident, critical illness, and business travel and accident insurance.
• AI-powered career tool for identifying career steps and learning opportunities.
• Internal mobility team focused on career growth.