Windows Systems Administrator - TS/SCI with Polygraph

Req ID: RQ222221

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph

Public Trust/Other Required: None

Job Family: IT Infrastructure and Operations

Skills:

Group Policy Objects (GPO),IT Troubleshooting,Microsoft Windows Server,Root Cause Analysis (RCA),Windows Server Support

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

WINDOWS SYSTEMS ADMINISTRATOR

YOUR IMPACT

Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day.

CIO Infrastructure Services (CIS) is growing, and we invite both our experienced incumbents and new team members to be part of what’s next. Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, we’ll strengthen continuity and drive the next generation of innovation.

MEANINGFUL WORK AND PERSONAL IMPACT

As a Windows Systems Administrator supporting enterprise infrastructure services, you will operate, secure, and sustain Windows server and client platforms across dynamic multinetwork environments. You will ensure stable operations, maintain compliance with security and configuration standards, and support mission critical services that require high availability and rapid issue resolution. Your contributions directly improve system reliability, resilience, and readiness across globally distributed environments.

KEY RESPONSIBILITIES:

• Administer, operate, and maintain Windows server and endpoint systems across physical, virtual, and cloud environments, ensuring stability, performance, and secure configurations

• Perform Tier II/III troubleshooting and root cause analysis for OS level, authentication, GPO, networking, and dependency related issues supporting enterprise services

• Manage configuration baselines, apply required updates, support lifecycle planning, and maintain accurate documentation for change, configuration, and operational processes

• Support Active Directory, Group Policy, certificate services, server roles, and related identity, access, and configuration services across multiple network domains

• Maintain, monitor, and update Windows systems for compliance with security baselines, STIG settings, and enterprise hardening requirements

• Coordinate with engineering, cybersecurity, monitoring, and platform teams to ensure secure integrations, dependency mapping, and seamless operations

• Maintain server virtualization environments, including building, updating, and troubleshooting virtual machines, templates, hypervisors, and supporting infrastructure

• Support operational tasks such as firmware updates, system provisioning, backup/restore activities, template updates, and service availability monitoring

• Execute Windows OS and security patching across assigned systems, deploying enterprise approved updates, baseline releases, and third-party patches to maintain security and configuration compliance

• Identify and remediate noncompliant systems by reviewing vulnerability and SCAP reports, diagnosing root causes, coordinating corrective actions, and validating remediation across multiple networks

WHAT YOU’LL NEED TO SUCCEED :

• EDUCATION: Bachelor’s degree in an IT-related field, or 10+ years of relevant IT experience in lieu of a degree

• CERTFICATION: Meet DoD 8140 Information Assurance Workforce certification requirements (e.g. Security+ CE, etc.)

• CLEARANCE: Active TS/SCI clearance with a favorable polygraph

• Hands on experience administering Windows Server and Windows client OS in enterprise or multinetwork environments

• Proficiency with Active Directory, GPO creation/troubleshooting, OS deployment tooling, and PowerShell automation

• Experience implementing secure configurations, STIG/HBSS compliance, and OS hardening practices

• Familiarity with enterprise patch management, vulnerability remediation, and configuration compliance auditing

• Ability to diagnose and resolve complex OS, authentication, and configuration issues across distributed infrastructure

• Strong documentation, communication, and collaboration skills

• US citizenship required

• LOCATION: Onsite

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

Growth: AI-powered career tool that identifies career steps and learning opportunities

Support: An internal mobility team focused on helping you achieve your career goals

Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

#CIS

The likely salary range for this position is $111,155 - $150,385. 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.

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.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 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 mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans