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Senior Linux System Administrator

Job in Alexandria, Fairfax County, Virginia, 22350, USA
Listing for: Leidos
Full Time position
Listed on 2026-06-11
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Administrator, Systems Engineer
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

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 U.S. Department of Defense test and training communities, to increase the speed of the development cycle, and to get capabilities to the warfighter more rapidly. The Senior Linux System Administrator will work within a team of 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 required to work on-site in our Alexandria, VA office.

Primary Responsibilities
  • Provide support for installing and maintaining Linux servers.
  • Provide technical leadership for migrating on‑premise infrastructure to a hybrid cloud solution.
  • 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 DHCP, DNS, e‑mail, Apache Web Servers, Tomcat application servers, Atlassian applications, Maria

    DB 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
  • US Citizen with at least an active Secret clearance.
  • Bachelor’s degree with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.
  • 5+ years of experience providing System Administration to DoD IT systems.
  • DoD 8570 IAT level I compliant.
Preferred Qualifications
  • 10+ years of experience providing System Administration to DoD IT systems.
  • DoD 8570 IAT level III compliant.
Pay and Benefits

The pay range for this position is $ – $, based on experience and qualifications.

Benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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Position Requirements
10+ Years work experience
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