Senior Systems Administrator – Windows, Linux & Security

GCI; Virginia (MN); On-site; USD 95,000 - 140,000; Full time

Job summary

GCI is seeking a Systems Administrator Expert in Reston, VA to support Windows and Linux environments, security patching, backups, and server configurations. You will work with cyber operations teams and analysts to ensure secure, reliable systems under tight deadlines. U.S.

citizenship and TS/SCI with polygraph clearance are required. The role demands strong communication skills and the ability to multitask in a fast-paced environment while collaborating with cross-functional teams to maintain

Qualifications

• Experience with Microsoft Windows Server and Active Directory maintenance.
• Experience with Hypervisor technologies (Hyper-V, KVM, VMware).
• Experience installing and configuring systems supporting infrastructure and/or R&D activities.
• Experience patching operational and development systems and documenting compliance.
• Strong communication skills (written, verbal, face-to-face).

Responsibilities

• Maintain Windows operating systems and provide application support for the team.
• Schedule and install Windows security patches, backups, and manage server configurations.
• Plan and perform system upgrades and monitor back-end infrastructure.
• Collaborate with security engineers and network engineers to resolve complex issues.

Skills

Windows Server Admin

Active Directory

Hypervisor technologies

Scripting (PowerShell, Bash)

System backups

Security policy/compliance

Analytical troubleshooting

Communication skills

Tools

Splunk

Rapid7

PKI / Windows Certificate Authority

Linux (Rocky, Ubuntu)

Atlassian suite

Cloud technologies

Job description

GCI is seeking a Systems Administrator Expert in Reston, VA to support Windows and Linux environments, security patching, backups, and server configurations. You will work with cyber operations teams and analysts to ensure secure, reliable systems under tight deadlines. U.S.

citizenship and TS/SCI with polygraph clearance are required. The role demands strong communication skills and the ability to multitask in a fast-paced environment while collaborating with cross-functional teams to maintain