Senior Linux System Administrator

k 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:

• 12+ years of relevant experience doing system administration on Linux servers, networking equipment and security monitoring equipment. In addition a Bachelor's Degree but additional experience maybe considered in lieu of a degree.

• 8+ years of experience providing System Administration to DoD IT systems

• IAT Level I: A+, CCNA-Security, Network+, SSCP, Security+ CE

• US Citizen with the ability to obtain and maintain a Secret clearance

• Ability to work evenings and weekends as needed

Preferred Qualifications:

• 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

• Experience leading a team

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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