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# Senior Linux Systems Administrator

- **Company:** Leidos, Inc.
- **Location:** Annapolis Junction, MD, United States
- **Experience:** Expert
- **Salary:** $92,300.0 - $166,850.0
- **Contract:** Permanent contract
- **Skills:** Cyber Security, Linux, Internet Protocol, Linux System Administration, Public Key Infrastructure, Virtualization Technology, Containerization
- **Published:** June 5, 2026
- **Apply:** https://dejobs.org/x/x/0583CFB15B584475AAF4AFE1DEFB3B50/job/

## About the Role

* Bachelor's degree in a relevant field with 10+ years of experience, OR no degree with 15+ years of related professional experience
 * IAT Level II certification (e.g., Security+ CE, SSCP)
 * Strong proficiency in Linux system administration (required)
 * Experience with IP networking and firewall technologies
 * Solid understanding of PKI/TLS/cryptography and associated policies
 * Clearance Required: Must have an active TS/SCI with Polygraph

## Description

* Administer and maintain Linux-based systems across cloud and containerized environments
 * Manage and support storage solutions and virtualization technologies
 * Configure and troubleshoot IP networking and firewall components
 * Apply and support PKI/TLS/cryptographic solutions, including adherence to crypto policies
 * Perform application support and advanced system troubleshooting within Linux environments
 * Support SSP compliance activities and STE/STN requirements on Linux systems
 * Contribute to system automation efforts using available tools (as applicable)


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