Windows OS Engineer - TS/SCI with Polygraph

Type of Requisition:
Pipeline

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:
IT Infrastructure and Operations

Job Qualifications:

Skills:
Active Directory Administration, Group Policy, Group Policy Objects (GPO), Testing, Vulnerability Assessments
Certifications:
None
Experience:
10 + years of related experience
US Citizenship Required:
Yes

Job Description:

WINDOWS OS ENGINEER

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.

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 OS Engineer supporting CIS, you will engineer, maintain, and secure enterprise Windows server and client operating system platforms across complex, multinetwork environments. You will standardize and optimize OS baselines, implement modern configuration practices, and ensure stable, secure operation of critical infrastructure services. Your work directly enhances system reliability, resilience, and readiness across mission enabling environments.

KEY RESPONSIBILITIES:

• Engineer, build, and maintain Windows server and client operating system baselines, ensuring configurations remain current, compliant, and aligned with enterprise standards

• Develop, update, and harden OS images, configuration baselines, firmware, drivers, and platform components across physical, virtual, and cloud environments

• Troubleshoot complex OS level issues involving authentication, Group Policy, networking, hardware dependencies, and multidomain environments

• Implement OS lifecycle management, including upgrades, template updates, EOL planning, and integration of new versions into production environments

• Support enterprise authentication, directory, and configuration services such as Active Directory, Group Policy Objects (GPOs), Windows Server roles, and certificate-based authentication mechanisms

• Maintain documentation, SOPs, configuration cut sheets, and engineering artifacts supporting accreditation, change management, and operational use

• Collaborate with engineering, cybersecurity, platform owners, automation teams, and operations personnel to ensure secure, performant OS deployments

• Support integration of Windows OS builds into virtualized and cloud environments, including testing, validation, and dependency mapping

• Execute OS and security patching to maintain compliance and secure configurations

• Track, remediate, and report patching and vulnerability gaps across assigned systems

WHAT YOU'LL NEED TO SUCCEED :

• EDUCATION: Bachelor's degree in an IT-related field, or 10-12+ years of relevant IT experience in lieu of a degree
• CERTIFICATION: Meet DoD 8140 Information Assurance Workforce certification requirements (e.g. Security+ CE, etc.)
• ADDITIONAL REQUIRED CERTIFICATION : Microsoft Certified: Windows Server Hybrid Administrator Associate
• CLEARANCE: Active TS/SCI clearance with a favorable polygraph
• Hands-on experience engineering and administering Windows Server and Windows client operating systems in enterprise or multinetwork environments
• Strong proficiency with Active Directory, GPO development and troubleshooting, OS deployment tooling, and automation (PowerShell, scripting)
• Experience with secure configuration practices, STIG implementation, and OS hardening
• Familiarity with patch management processes, vulnerability remediation, and configuration compliance auditing
• Ability to diagnose and resolve complex OS, authentication, and configuration issues across distributed infrastructure
• Strong documentation, communication, and cross team 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 $147,292 - $199,278. 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 MD Annapolis Junction

Additional Work Locations:
USA CO Colorado Springs - 8610 Explorer Dr (COC036), USA DC Washington, USA FL MacDill AFB - 7115 S Boundary Blvd (FLC096), USA VA Springfield - 7770 Backlick Rd (VAS110)

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 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 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