Linux Systems Administrator

Via Logic LLC; Mississippi; Hybrid; USD 73,000 - 133,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos is seeking a Mid-Level Linux Systems Administrator to support a large HPC environment at Stennis Space Center, MS. You will work with a technical team on RHEL, Satellite, and Ansible automation to solve complex computational challenges for DoW mission needs.

The role requires U.S. citizenship, Interim Secret clearance eligibility, and a local-to-Stennis Space Center commuting radius. A hybrid work schedule is offered, with on-site presence based on mission requirements.

Qualifications

• Bachelor's degree with 4+ years Linux Systems Administration experience.
• Strong troubleshooting and analytical skills.
• Excellent written and verbal communication.

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.
• Support Red Hat Satellite for enterprise software deployment, patching, and system management.
• Use Ansible to automate system administration, configuration, and recurring tasks.
• Troubleshoot Linux OS, applications, hardware, storage, networking, and performance issues.
• Assist with system performance tuning and optimization across production environments.
• Ensure systems comply with security policies and configuration baselines.

Job 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.

Original Posting

August 13, 2026

Pay Range

Pay Range $73,450.00 - $132,775.00

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.

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

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.