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# Principal Systems Administrator

- **Company:** Leidos, Inc.
- **Location:** McLean, VA, United States
- **Experience:** Expert
- **Salary:** $116,350.0 - $210,325.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Agile Methodology, Signals Intelligence, DevOps, Domain Name System (DNS), Key Management, Windows PowerShell, Scripting, Computer Network Operations, Atlassian Tools, Patch Management
- **Published:** October 15, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9241471/principal-systems-administrator

## About the Role

* Bachelors degree with 12+ years of prior relevant experience or Masters with 10+ years of prior relevant experience. Additional years of experience may be substituted in lieu of a degree.
 * Must have an active TS/SCI with a Polygraph, to be considered
 * In-depth of experience with Windows 2012/2016
 * Significant experience with Active Directory and DNS
 * Significant experience with hardening Windows environments
 * Demonstrated experience with Scripting/Automation
 * Experience troubleshooting issues in a growing environment
 * Experience with server patch management methodologies
 * Familiarity working with Window's PowerShell.
 * Experience working with Jira and Confluence.
 * Significant experience working in an Agile environment
 * Significant experience establishing goals and plans that meet project objectives.

#CABARESTON

#ASBA

#HALO

#HALOincumbents

## Description

Leidos has a new and exciting opportunity for a Principal Systems Administrator in our Intel Sector's (IS) Solutions Analysis Business Area (ASBA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!, The Principal Systems Administrator will support the design, development and deployment of products, tools and capabilities in support of a dynamic customer enterprise. This role performs System Administration tasks on a customer's system that supports mission needs and coordination requirements. This individual will work in a team environment and coordinate with appropriate elements to effectively meet design, development, deployment, and monitoring/securing objectives., * Design, build, test and maintain scalable and stable technology solutions to meet mission needs

 * Create documentation to include flowcharts, diagrams, manuals and any other required or requested deliverables.
 * Use the Agile methodology to document requirements, configure, test, implement and support efficient solutions
 * Perform automation tasks through scripting and testing
 * Rotate between O&M to Dev Ops roles as required for Agile processes
 * Evaluate alternatives including cost and risk, supportability and analyses for total systems; resolve highly complex multi-domain systems issues
 * Operating and maintaining systems in Windows