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, 2026For 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.
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.
Skills Required
- TS/SCI with Polygraph clearance at the time of application
- Bachelor's degree in a technical discipline from an accredited college or university
- Four additional years of relevant systems administration experience may substitute for the bachelor's degree
- At least nine years of experience supporting programs or contracts of similar scope, type, and complexity
- Experience supporting Intelligence Community or other national security missions
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
