Senior Linux Systems Administrator

If you’re interested in being a part of an extraordinary mission, working with our customer who runs the DoW’s largest supercomputing centers and operating some of the most powerful supercomputers in the world, we could use your experience and enthusiasm! You will be providing your Linux Systems Administration expertise to ensure DoW scientists have reliable access to these critical resources and in turn, will be directly supporting the warfighter.

All work will be performed at our customer’s site on Wright-Patterson Air Force Base in Dayton, OH and a Top Secret Clearance is required to begin work on the program.

What You’ll Do:

• Serve as Deputy Team Lead over the local System Administration Functional team.
• Provide for RedHat Linux systems administration, performance tuning, client security administration, systems software support, and technology assessments in support of a multi-platform UNIX environment.
• Perform systems enhancement, configuration, maintenance, installation, interfaces, coordination, and software installations and upgrades to UNIX operating systems and layered software packages.
• Monitor and tune systems to achieve optimum level of performance in accordance with established policies, procedures, and service level agreements.
• Perform acceptance testing of modules, subsystems, and total systems.

• Perform software installation and configuration.

• Monitor log files, performance issues, and the production environment for mission critical systems
• Demonstrate ability to set priorities and organize work to meet deadlines
• Ensure compliance with established standards, policies, and configuration guidelines

• Must hold an active in scope TOP SECRET clearance or have the ability to obtain Interim TOP SECRET eligibility prior to start. (US Citizenship required)
• Must hold a bachelor’s degree and at least 8 years of equivalent experience, or a master’s degree and 6 years of experience.
• Must hold current DOD 8570 IAT II certification (Linux+, CCNA-Security, CND, CySA+, GICSP, GSEC, Security+ CE, or SSCP) prior to start.
• Communicates effectively both orally and in a written form with users and office staff
• Demonstrated Linux expertise managing bare metal and virtualized systems
• Hands on experience patching, managing, and responding to DoW STIGs including POAM remediations

• Experience supporting and working with ISSO’s and ISSM’s

• Proficient in Ansible or equivalent configuration management experience

Preferred Qualifications:

• Proficiency in Linux storage subsystems
• Experience managing RedHat Satellite systems
• Experience managing containerized services within Kubernetes
• Ability to write, diagnose, and optimize scripts written in bash, python, or perl
• Familiarity managing virtual systems within VMware
• Windows Server and workstation experience

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

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:October 16, 2026

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 $92,300.00 - $166,850.00, Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.