Senior Windows System Administrator
Job in
Arlington, Arlington County, Virginia, 22201, USA
Listed on 2026-06-12
Listing for:
GCyber
Full Time
position Listed on 2026-06-12
Job specializations:
-
IT/Tech
Cybersecurity, Systems Administrator, Windows Server, Systems Engineer
Job Description & How to Apply Below
Overview
GCyber is seeking a Senior Windows System Administrator to help support our government customer in Arlington, VA. The role focuses on ownership of our Windows environment while supporting a mixed-OS infrastructure.
Responsibilities- Serve as the senior lead and primary Subject Matter Expert (SME) for all Windows Server environments, driving technical strategy, architecture decisions, and operational excellence.
- Design, architect, implement, and sustain enterprise Windows infrastructure.
- Own the health, performance, and availability of Windows systems; proactively monitor, analyze trends, and implement improvements to prevent issues before they impact operations.
- Lead complex troubleshooting and incident resolution efforts, conducting deep root cause analysis and implementing permanent corrective actions across systems and services.
- Establish and enforce enterprise standards, baselines, and hardening guidelines in alignment with security frameworks and compliance requirements.
- Provide technical leadership and mentorship to system administrators and engineers; guide best practices and elevate team capabilities across Windows technologies.
- Lead planning and execution of system lifecycle activities, including patching, upgrades, migrations, and modernization initiatives.
- Provide cross-platform support by performing basic Linux system administration and coordinating with Linux SMEs for complex issues.
- Active Top Secret/SCI clearance
- Bachelor’s degree in a related discipline with 8+ years of relevant experience
- IAT II Certification (i.e., Security+, CCNA-Security, CySA+, CND, GICSP, GSEC, SSCP)
- Strong experience administering Windows Server environments
- Deep understanding of core Windows services and system management
- Working knowledge of Linux systems.
Position Requirements
10+ Years
work experience
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