Senior Linux Systems Administrator - Quality Assurance

Leidos LLC; Maryland; On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking an experienced Senior Linux Systems Administrator – Quality Assurance to support Linux environments enabling mission-critical testing, validation, and operational readiness. You will resolve complex Linux issues while supporting enterprise operations, automation, system optimization, and advanced operational support activities.

As part of a multidisciplinary team, you will improve Linux platform reliability, ensure systems are ready for testing and deployment, and communicate

Qualifications

• Clearance TS/SCI with Polygraph, at time of Application, to be considered for the position.
• Bachelor's degree in a technical discipline from an accredited college or university.
• Four (4) additional years of relevant system administration experience may be substituted for the required bachelor's degree.
• Minimum of nine (9) years of experience supporting programs or contracts of similar scope, type, and complexity.

Responsibilities

• Configure, administer, and maintain Linux operating systems supporting enterprise IT environments.
• Install and maintain operating system software while ensuring system integrity, reliability, and availability.
• Configure and maintain network components supporting Linux environments.
• Manage daily Linux system configuration and operational activities.
• Provide implementation, troubleshooting, and maintenance support for enterprise IT systems.
• Diagnose and resolve Tier 1 and Tier 2 Help Desk incidents involving Linux systems and associated hardware.
• Troubleshoot complex hardware and operating system issues while remaining engaged through issue resolution.
• Communicate operational status, issue resolution, and escalation information to management and customers.
• Develop Bash shell scripts that improve system stability and deployment repeatability.
• Support automation initiatives that improve consistency across Linux environments.
• Perform operating system enhancements that improve reliability and operational efficiency.
• Optimize Linux system operations through capacity analysis, resource utilization monitoring, and performance tuning.
• Analyze escalated operational issues and provide detailed technical feedback to management and customers.
• Support continuous improvement of Linux operational processes.
• Maintain reliable Linux environments supporting testing, validation, and operational readiness.
• Contribute to increasing operational efficiency across enterprise Linux platforms.

Skills

Linux administration

Bash scripting

Incident response

Automation

System optimization

Performance analysis

Customer support

Education

Bachelor's degree in a technical discipline

Job description

Job Description

About Leidos Leidos is a FORTUNE 500® company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and health industries. We deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. Guided by our Mission, Vision, and Values, Leidos empowers its teams, contributes to its communities, and operates sustainably—always with a commitment to doing the right thing for our customers, our people, and our community. The Leidos Intel Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support Intelligence Community customers as they address evolving national security challenges.

About the Opportunity

Leidos is seeking an experienced Senior Linux Systems Administrator – Quality Assurance to support Linux environments that enable mission-critical testing, validation, and operational readiness. As part of a multidisciplinary operations team, you will resolve increasingly complex Linux system issues while supporting enterprise operations, automation, system optimization, and advanced operational support activities.

Why This Role Matters

Operational excellence depends on Linux environments that are reliable, repeatable, and resilient. As a Senior Linux Systems Administrator – Quality Assurance, you will leverage your experience to resolve complex operational issues, improve Linux platform reliability, and ensure systems remain ready to support testing, deployment, and mission execution.

What You’ll Do

Linux Administration

• Configure, administer, and maintain Linux operating systems supporting enterprise IT environments.


• Install and maintain operating system software while ensuring system integrity, reliability, and availability.


• Configure and maintain network components supporting Linux environments.


• Manage daily Linux system configuration and operational activities.

Operations & Incident Response

• Provide implementation, troubleshooting, and maintenance support for enterprise IT systems.


• Diagnose and resolve Tier 1 and Tier 2 Help Desk incidents involving Linux systems and associated hardware.


• Troubleshoot complex hardware and operating system issues while remaining engaged through issue resolution.


• Communicate operational status, issue resolution, and escalation information to management and customers.

Automation & System Reliability

• Develop Bash shell scripts that improve system stability and deployment repeatability.


• Support automation initiatives that improve consistency across Linux environments.


• Perform operating system enhancements that improve reliability and operational efficiency.


• Optimize Linux system operations through capacity analysis, resource utilization monitoring, and performance tuning.

Performance & Customer Support

• Analyze escalated operational issues and provide detailed technical feedback to management and customers.


• Support continuous improvement of Linux operational processes.


• Maintain reliable Linux environments supporting testing, validation, and operational readiness.


• Contribute to increasing operational efficiency across enterprise Linux platforms.

Required Qualifications

• Clearance TS/SCI with Polygraph, at time of Application, to be considered for the position.


• Education: Bachelor's degree in a technical discipline from an accredited college or university.


• Four (4) additional years of relevant system administration experience may be substituted for the required bachelor's degree.


• Experience: Minimum of nine (9) years of experience supporting programs or contracts of similar scope, type, and complexity.

Preferred Qualifications

• Experience supporting Intelligence Community or other national security missions.

Original Posting

Original Posting: August 31, 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. 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.

Pay and Benefits

• Competitive compensation


• Health and Wellness programs


• Income Protection


• Paid Leave and Retirement

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 here.

Leidos

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 $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Company Culture

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.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.