Sr. System Administrator

Job Requirements Arlington, VA Top Secret Polygraph not specified Mid Level Career (5+ yrs experience) Salary not specified Join Premium to unlock estimated salaries

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 group id: 91136213 N Name Hidden Recruiter Apply now