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Leidos Logo

Senior Linux System Administrator - Multiple Teams

Leidos

$126,100 - $227,950
Sep 25, 2025
Alexandria, VA, USA
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The Test and Training Enabling Architecture (TENA) program at Leidos is looking to develop tools for the United States Department of Defense test and training communities to increase the speed of the development cycle and get capabilities to the warfighter more rapidly.

Requirements

  • 12+ years of relevant experience doing system administration on Linux servers, networking equipment and security monitoring equipment
  • 8+ years of experience providing System Administration to DoD IT systems
  • IAT Level I: A+, CCNA-Security, Network+, SSCP, Security+ CE
  • 6+ years of experience providing Red Hat System Administration to DoD IT systems
  • IAT Level III: CASP CE, CCNP Security+ CE, CISA, CISSP, GCED, GCIH, CCSP
  • Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE)
  • CompTIA Linux+ or Linux Professional Institute LPIC-1

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

Other

  • US Citizen with the ability to obtain and maintain a Secret clearance
  • Ability to work evenings and weekends as needed
  • Ability to support off-hours system administration on evenings and/or weekends (as needed)
  • Bachelor’s Degree but additional experience maybe considered in lieu of a degree
  • Experience leading a team