Principal Linux Systems Administrator
Leidos | Intelligence Sector – Cyber & Analytics Business Area (CABA)
Leidos has an exciting opportunity for a Principal Linux Systems Administrator to join our Intelligence Sector within CABA. Our team leads the way in Security Engineering, Computer Network Operations (CNO), SIGINT, Mission Software, and advanced analytics supporting critical national security missions.
At Leidos, we offer competitive benefits including PTO, 11 paid holidays, 401(k) with 6% match (immediate vesting), flexible schedules, stock purchase plans, paid parental leave, and ongoing training and education support.
$10K Sign-On Bonus Available
What you will be doingAs a Linux Systems Administrator, you will support the implementation, maintenance, and optimization of IT systems and infrastructure. You’ll play a key role in ensuring system performance, security compliance, and operational reliability across a variety of environments.
Key ResponsibilitiesEnsure systems meet STE/STN security and compliance requirements
Manage user accounts, access controls, and security tools
Configure and maintain Linux/UNIX and Windows systems
Provide IT support and troubleshooting across servers, storage, networks, and mobile devices
Monitor system performance and resolve issues to maintain network integrity
Support system optimization, capacity planning, and automation efforts
Assist users and resolve escalated technical issues
Install and maintain hardware/software and support dispatch systems
Experience: 10+ years as a System Administrator supporting programs of similar scope and complexity
Education: Bachelor’s degree in a technical field (or 5 additional years of experience in lieu of degree)
Technical Skills:
Ansible (playbook development and maintenance)
VMware administration
AWS (EC2, EFS, S3 fundamentals)
Automation and scripting
VMDK creation/deployment
HP hardware and remote management
Cross-team collaboration
Clearance: Active TS/SCI with Polygraph required
cssrc
conmd
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:March 24, 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.
Similar Jobs
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.
.png){kind=logo}
