Senior Linux Systems Administrator - Quality Assurance

Leidos; Aberdeen (MD); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos in Aberdeen, MD is seeking a Senior Linux Systems Administrator – Quality Assurance to support Linux environments that enable mission-critical testing, validation, and operational readiness for top-priority programs. You will join a multidisciplinary operations team responsible for reliability, scalability, and security of enterprise systems used across national security initiatives.

The role emphasizes hands-on Linux administration, incident response, automation, and performance tuning.

Qualifications

• Bachelor's degree in a technical discipline; four additional years of relevant system administration may substitute for degree.
• Minimum nine years of experience supporting programs or contracts of similar scope and complexity.
• TS/SCI with Polygraph clearance required at time of application.
• Experience in Intelligence Community or national security missions preferred.

Responsibilities

• Configure, administer, and maintain Linux operating systems in enterprise IT environments.
• Provide incident diagnosis and resolution for Tier 1/2 Linux incidents.
• Develop Bash scripts and automation to improve reliability and repeatability.
• Monitor performance, capacity, and optimize Linux operations.
• Communicate status and escalation information to management and customers.

Skills

Linux administration

Bash scripting

Incident response

Automation

System monitoring

Performance tuning

Education

Bachelor's degree in a technical discipline

Four years of additional relevant system administration experience may substitute for the required bachelor's degree

Tools

Bash

Linux OS

TS/SCI with Polygraph

Job description

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.

This posting is for multiple opportunities.

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.

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 18, 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.

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 [e-mail].

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.

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.