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# System Administrator

- **Company:** Leidos, Inc.
- **Location:** Warner Robins, GA, United States
- **Experience:** Experienced
- **Salary:** $92,300.0 - $166,850.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Application Performance Management, Command Prompt, CompTIA Security+, Cyber Security, Linux, Desktop Virtualization, Domain Name System (DNS), Microsoft Exchange Server, VMware Servers, Monitoring of Systems, Information Security Management, Linux Servers, Windows PowerShell, Server Virtualization, Software Configuration Management, Software Vulnerability Management, Information Technology, Vulnerability Analysis, Vmware
- **Published:** October 15, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9241492/system-administrator

## About the Role

Clearance Required: Must be eligible for TS/SCI. Minimum of aDoD Secret to start.

 * Bachelor's degree, in Information Technology, or a related technical field and 10 years of prior relevant experience. Additional experience may be substituted for a degree.
 * Must have at least 5 years of Windows administration experience. Must have at least 3 years of experience in information security management, with demonstrated expertise in security governance, risk management, compliance, and operational security functions.
 * Have strong analytical skills, attention to detail, and the ability to work effectively both independently and as part of a team.
 * Individual in this position must possess and maintain an active Information Assurance Technical (IAT) Level II baseline certification (CompTIA Security+ CE or higher) upon hire.

Must have at least 3 years of experience with each of the following:

 * Implementing and managing Windows Active Directory and DNS environments
 * Creating and managing Group Policy Objects (GPOs)
 * Microsoft MCM
 * Microsoft Exchange administration and Exchange Management Shell
 * Must have experience with Windows Command Line, PowerShell, and PowerShell scripting.
 * Strong understanding of advanced security protocols, standards, and information security principles is a must.
 * Experience with software and security architecture.
 * Hands-on experience with IAVA management.
 * Hands-on experience supporting users, optimizing system operations, and monitoring enterprise IT systems.
 * Commitment to best practices, including compliance with maintenance windows and changing control procedures.
 * Experience with Windows and Linux operating systems

Preferred Quals:

 * Experience documenting and supporting security accreditation and certification activities.
 * Experience with Tenable and Trellix security technologies.
 * Experience with data center design and configuration, including rack-and-stack, power planning, and equipment placement.
 * Experience with VMware VCF 9.0.2.
 * Experience serving in a System Administrator role supporting software configuration management and classified environments.

## Description

The selected candidate will be responsible for monitoring and administrating systems, applications, and processes to ensure issues are identified, tracked, and resolved in a timely manner.

This role also includes supporting servers, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux servers, and Virtual Desktop Infrastructure (VDI).

Additional responsibilities include:

 * Maintaining multiple virtual server clusters
 * Using enterprise monitoring tools to detect, assess, and respond to alerts.
 * Providing technical support to partner workgroups on overlapping efforts while maintaining strong interdepartmental collaboration.
 * Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
 * Initiating IAVA responses and system security scans, completing remediation actions, deploying patches and security updates to designated sites, and executing monthly security scans.
 * Identifying and resolving hardware and software problems.
 * Proactively notifying customers when test infrastructure delays may affect their ability to complete business functions on time and communicating system outages and publishing status updates to users, as needed.
 * Authoring and maintaining clear, accurate, and concise documentation.
 * Responding to calls and emails in a timely and professional manner.
 * Planning and implementing IT enhancements and supporting project-related work.
 * Addressing system scan findings, vulnerability management patching