Senior Linux System Engineer Jobs in Middletown, DE

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.

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.