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Sr. System Administrator

Global Enterprise Services, LLC

Posted today

Job Requirements

Arlington, VA
Top Secret Polygraph not specified
Mid Level Career (5+ yrs experience)
Salary not specified
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Job Description

Location: Pentagon, Arlington, VA
Clearance: Active Top Secret (TS) REQUIRED
Certification: DoD 8140/8570 IAT Level II or Above REQUIRED

Position Overview
GES is seeking a Senior Systems Administrator to lead enterprise‑level system administration activities in support of mission‑critical Pentagon operations. This role requires deep technical expertise, strong leadership, and the ability to maintain secure, compliant, and highly available systems in a high‑visibility environment.

Key Responsibilities

Perform advanced system administration, diagnostics, and troubleshooting across enterprise systems

Lead patching, upgrades, and compliance initiatives to maintain system integrity

Manage and maintain Active Directory, DNS, DHCP, and virtualization platforms

Ensure STIG compliance and maintain a strong cybersecurity posture

Support system implementations, modernization efforts, and infrastructure improvements

Provide technical leadership, mentoring, and guidance to junior administrators

Required Qualifications

Bachelor’s degree in Information Technology or related field

5+ years of progressive system administration experience

DoD 8140/8570 IAT Level II certification (Security+, CCNA Security, GSEC, SSCP, etc.)

Strong experience with enterprise systems, virtualization, and Windows Server technologies
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