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Leidos

Linux Systems Administrator

Stennis Space Center, MS, United States

Pay Range $73,450.00 - $132,775.00

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Job details

Pay: Pay Range $73,450.00 - $132,775.00
Experience: Bachelor's degree with 4+ years of relevant Linux Systems Administration experience.
Posting language: English
Posted: Aug 13, 2026

Original job description

Description

Are you a Linux Systems Administrator ready to take your skills beyond the traditional enterprise environment?

Leidos is seeking a Mid-Level Linux Systems Administrator to support one of the Department of War's (DoW) largest High Performance Computing (HPC) environments at Stennis Space Center, Mississippi.

In this role, you'll work alongside a highly skilled technical team supporting advanced supercomputing resources used by scientists and engineers to solve complex computational challenges and directly support the warfighter.

You'll gain hands-on experience with Red Hat Enterprise Linux (RHEL), Red Hat Satellite, Ansible automation, system performance, security, and large-scale computing environments while continuing to grow your Linux and HPC expertise.

This position offers a hybrid work schedule. Candidates must be local to or within commuting distance of Stennis Space Center, MS. On-site presence is required based on mission and customer needs.

Clearance: U.S. citizenship is required and ability to obtain an Interim Secret clearance is required prior to starting on the program.

Primary Responsibilities

Administer, configure, maintain, and troubleshoot Red Hat Enterprise Linux (RHEL) systems.
Install, configure, patch, upgrade, and maintain Linux operating systems and supporting software.
Monitor system health, availability, capacity, and performance and proactively address potential issues.
Support Red Hat Satellite for enterprise software deployment, patching, and system management.
Use Ansible to automate system administration, configuration, and recurring operational tasks.
Troubleshoot Linux operating system, application, hardware, storage, networking, and performance issues.
Assist with system performance tuning and optimization across production environments.
Perform software installation and configuration in accordance with established security and configuration standards.
Participate in testing and validation of new hardware, software, and system changes.
Ensure systems comply with established security policies, configuration baselines, and operational procedures.
Develop and maintain technical documentation, procedures, configuration records, and troubleshooting guides.
Collaborate with senior administrators, engineers, users, and other technical teams to resolve technical issues and support mission requirements.
Share technical knowledge, lessons learned, and best practices across the team.

Required Qualifications

U.S. Citizenship is required.
Active Secret clearance or ability to obtain Interim Secret eligibility prior to start.
Bachelor's degree with 4+ years of relevant Linux Systems Administration experience. Additional relevant experience may be considered in lieu of a degree.
Current DoW 8570 IAT Level II certification – Security+ CE or equivalent – prior to start.
Current Red Hat Certified System Administrator (RHCSA) or CompTIA Linux+ certification prior to start.
Hands-on experience administering Red Hat Enterprise Linux (RHEL) environments.
Experience installing, configuring, patching, maintaining, and troubleshooting Linux systems.
Familiarity with Red Hat Satellite or similar enterprise Linux management tools.
Experience with or working knowledge of Ansible and infrastructure automation.
Working knowledge of Linux security, permissions, networking, storage, and system performance.
Strong troubleshooting, analytical, and problem-solving skills.
Strong written and verbal communication skills.
Must be local to or within commuting distance of Stennis Space Center, MS.

Preferred Qualifications

Experience supporting High Performance Computing (HPC), supercomputing, or large-scale computing environments.
Experience supporting DoW, federal government, or other mission-critical environments.
Hands-on Red Hat Satellite administration experience.
Experience creating or modifying Ansible playbooks.
Linux scripting experience using Bash, Python, or similar technologies.
Familiarity with enterprise storage, networking, or virtualization technologies.
Experience supporting large-scale or highly available Linux environments.

Join Our Team

This isn't your average Linux Systems Administrator opportunity. You'll have the chance to expand your Linux expertise in a large-scale High Performance Computing environment, work alongside experienced technical professionals, strengthen your automation and systems administration skills, and support technology directly connected to the mission.

If you're a hands-on Linux professional ready for the next step in your career, we'd like to hear from you.

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:

August 13, 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 $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About Leidos

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 .

Pay and Benefits

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 .

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com .

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission (https://reportfraud.ftc.gov/#/) .

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.

REQNUMBER: R-00189488

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.

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More about this job

Skills

Linux
Red Hat Enterprise Linux
Ansible
Troubleshoot
System administration
Documentation
Troubleshooting
Security+
Problem solving
Communication skills
Bash
Python

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