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# Principal Systems Administrator - TS/SCI

- **Company:** Parsons Corporation
- **Location:** San Diego, CA, United States
- **Experience:** Expert
- **Salary:** $134,100.0 - $241,400.0
- **Contract:** Permanent contract
- **Skills:** Proxmox, CompTIA Security+, System Configuration, Linux, Hyper-V, Network Troubleshooting, Microsoft Office, Software Systems, System Software, Virtualization Technology, System Availability, SC Clearance, User Accounts, Vmware
- **Published:** October 10, 2026
- **Apply:** https://dejobs.org/x/x/4AF2B6C1C3FC484F9733677B204B4F16/job/

## About the Role

* Must have a Top-Secret clearance with SCI and ability to pass a Counterintelligence polygraph
 * Minimum of 10 years or more of professional experience as a systems administrator for Navy software systems
 * Master's degree, or an authorized substitution for a bachelor's degree plus four additional years of relevant experience
 * Experience with Linux-based operating systems
 * Experience with virtualization environments, including VMware, Hyper-V, Proxmox
 * Experience troubleshooting network connections
 * Experience troubleshooting system configuration issues
 * CompTIA Security+ certification.
 * PRIVAC
 * Excellent written and verbal communication skills and ability to work in a collaborative/distributed team environment
 * Proficiency with the Microsoft Office suite
 * Demonstrated experience with Cybersecurity best practices
 * Experience working in secured or classified operating environments

Desired Qualifications:

 * An active TS/SCI w/ CI Poly is preferred
 * Experience supporting Navy programs, NAVWAR, NIWC Pacific, NIWC Atlantic

Security Clearance Requirement:

An active Top Secret SCI security clearance is required for this position.

## Description

Parsons has emerged as a leader in the development of cutting-edge solutions for the Department of Defense and Intelligence Community. Our tremendous success can be attributed to our people and our priorities. We hire the best. We make them a priority, and we never lose focus on the mission. It's why we're here. We have built this cultural legacy by working closely with analysts and operators to understand their needs and delivering meaningful value through innovative, cost effective and intuitive software solutions. Parsons creates game-changing space solutions by teaming highly respected subject matter experts with brilliant technologists., Parsons is seeking a Senior Systems Administrator who has extensive experience with Navy software systems. In this role you will get to support a high visibility Navy Program.

What You'll be Doing :

 * Manage and maintain system IT environments to ensure system availability and security compliance
 * Installing, configuring, and updating system software and operating systems
 * Implementing security measures to meet security compliance
 * Managing user accounts and permissions
 * Troubleshooting/ resolving system issues to minimize downtime