Senior Systems Administrator

Alexandria VA Leidos


The Test and Training Enabling Architecture (TENA) program at Leidos is seeking an experienced Senior System Administrator to support our customer’s mission in developing tools for the United States Department of Defense’s test and training communities to help speed up the development cycle and get capabilities to the warfighter sooner. The Senior System Administrator will work within a team 20 developers and other system administrators adding new capabilities to our enclaves as well as ensuring the security and performance of our existing systems. The desired candidate must be able to obtain a Secret level clearance to be considered for this position, with the ability to work in the office located in Alexandria, VA as required.

Primary Responsibilities:

  • Install, maintain and manage Red Hat 9 servers.
  • Provide technical leadership for migrating on premise infrastructure to 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 DCHP, DNS, e-mail, Apache Web Servers, Tomcat application servers, Atlassian applications, 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:

  • 10+ years of relevant experience doing system administration on Red Hat 9 servers, networking equipment and security monitoring equipment.
  • Minimum of five years of experience providing System Administration to DoD IT systems
  • DoD 8570 IAT level I compliant
  • Ability to obtain a Secret clearance.

Preferred Qualifications:

  • Ten years of experience providing System Administration to DoD IT systems.
  • DoD 8570 IAT level III compliant.
  • Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE).
  • CompTIA Linux+ or Linux Professional Institute LPIC-1.

Original Posting Date:


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 $108,550.00 – $196,225.00

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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