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# Sr. System Administrator (Windows & Linux)

- **Company:** Zachary Piper
- **Location:** Fort Meade, MD, United States
- **Experience:** Expert
- **Salary:** $170,000 - $210,000
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, CompTIA Security+, Cyber Security, Linux, Linux Servers, Software Vulnerability Management, Nessus, Splunk, Vulnerability Analysis
- **Published:** November 3, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9285039/sr-system-administrator-windows-linux

## About the Role

· 10+ years of systems administration experience.

· Strong experience supporting Windows and Linux operating systems.

· Experience utilizing tools such as Nessus, Splunk, or similar security platforms.

· Active Security+ CE certification or higher.

· Active TS/SCI with Full Scope Polygraph clearance.

## Description

· Administer and maintain enterprise Windows and Linux server environments.

· Support vulnerability assessment, compliance initiatives, and security remediation efforts.

· Perform advanced troubleshooting, upgrades, patching, and system maintenance.

· Monitor system health and respond to incidents impacting infrastructure availability.

· Collaborate with technical teams to improve performance, security, and operational efficiency., Keywords: Windows Administrator, Linux Administrator, Splunk, Nessus, Vulnerability Management, Security Compliance, Infrastructure Support, System Administration, Security+, TS/SCI, Full Scope Polygraph