Senior Linux System Administrator

Job Description

Description

The Test and Training Enabling Architecture (TENA) program at Leidos is looking to add a Senior Linux System Administrator . Our mission is to develop tools for the United States Department of Defense test and training communities, to increase the speed of the development cycle, to get capabilities to the warfighter more rapidly. The System Administrator will work within a team engineers, developers and system administrators adding new capabilities to our enclaves, as well as ensuring the existing systems are secure and performing as intended.

This position is located in Alexandria, VA and you must be able to obtain a Secret level clearance to be considered for this position. The ability to support off-hours system administration on evenings and / or weekends (as needed) is required. In addition this position will allow the ability to work remote 2-3 days a week but the need to be on site on a weekly basis is required.

Primary Responsibilities :

• Provide support for installing and maintaining Linux servers using tools such as Ansible, Kickstart etc.
• Provide support for troubleshooting from OS to application-level issues
• Manage networking equipment including switches, routers and firewalls
• Manage configuration and maintenance of core enclave infrastructure services including DCHP, DNS, e-mail, Apache Web Servers, Tomcat application servers, Postgresql database servers
• Configure and monitor security tools required for DoD networks
• Participate and contribute to design discussions related to improving the capabilities, performance and security posture of new and existing services

Basic Qualifications :

Preferred Qualifications :

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting : September 25, 2025

For U.S. Positions : While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range : Pay Range $126,100.00 - $227,950.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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