Windows System Administrator - 2nd Shift with Security Clearance

GCyber; Arlington (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

GCyber is seeking a Windows System Administrator to support our government customer in Arlington, VA. This night shift role centers on ownership of the Windows environment within a mixed-OS infrastructure and requires strong technical leadership.

You will drive Windows Server strategy, design enterprise infrastructure, monitor health and performance, and coordinate with Linux SMEs for cross-platform issues. A TS/SCI clearance and IAT II certification are required.

Qualifications

• Experience administering Windows Server environments with focus on uptime and reliability.
• Strong knowledge of security baselines, hardening, and compliance alignment.
• Ability to provide cross-platform support by coordinating with Linux SMEs.
• Active Top Secret/SCI clearance and IAT II certification required.

Responsibilities

• Serve as the senior SME for Windows Server environments, driving strategy and architecture decisions.
• Design, architect, implement, and sustain enterprise Windows infrastructure.
• Own health, performance, and availability; monitor trends and implement improvements.
• Lead complex troubleshooting and incident resolution with root cause analysis and permanent fixes.
• Establish enterprise standards, baselines, and hardening guidelines aligned with security frameworks.
• Provide technical leadership and mentorship to system administrators and engineers.
• Lead system lifecycle activities including patching, upgrades, migrations, and modernization initiatives.
• Provide Linux cross-platform support by coordinating with Linux SMEs.

Skills

Windows Server administration

Incident management

Systems monitoring

Cross-platform support (Linux)

Education

Bachelors degree in a related discipline

8+ years of relevant experience

Security clearance: Top Secret/SCI

IAT II Certification (Security+, CCNA-Security, CySA+, CND, GICSP, GSEC, SSCP)

Job description

GCyber is seeking a 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. This is a night shift position with hours from 12:00pm - 8:00pm. As the Windows System Administrator, you will:

• 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. Minimum Qualifications and Experience:
• 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.