Systems Network Administrator (TS/SCI w/ Poly)Leidos - National Security Sector | Cyber & Analytics Business Area (CABA)What You'll DoIn this role, you'll be a key part of a small, high-performing team supporting enterprise IT systems and end users. You'll:
- Support the implementation, troubleshooting, and maintenance of IT systems
- Manage and monitor client/server, storage, and network environments
- Provide Tier 1 (Help Desk) and Tier 2 (escalation) support
- Troubleshoot system issues and apply patches, updates, and configuration changes
- Manage user accounts, password resets, VPN access, and PKI-related tasks
- Configure and maintain Windows, Linux, and UNIX systems
- Support virtualized and storage environments
- Document processes, SOPs, and troubleshooting procedures
- Contribute to reports and technical deliverables
- Use ticketing systems and internal tools to track and resolve issues
You'll also provide hands-on support to users both at headquarters and across the enterprise-delivering excellent customer service while managing multiple priorities.
Work Environment- On-site support: Monday-Friday, 8:00 AM - 4:00 PM
- Small team environment () with strong collaboration
- Direct interaction with end users and mission stakeholders
What You Bring
You're a problem-solver who enjoys working in dynamic environments and supporting mission-critical systems.
Basic Qualifications
- 5+ years of experience as a Systems Administrator (or similar role)
- Bachelor's degree in a technical field. Experience can be used in lieu of degree
- Active TS/SCI with Polygraph (required)
- CompTIA Security+ (current)
Accepted Certifications (one required)
- CompTIA Security+
- Microsoft Technology Associate (MTA-IT Infrastructure)
- MCSA - Desktop (Windows 7 or Windows 8)
- MCITP - Windows Client (Desktop Support or Desktop Administrator)
Why This Role Stands Out
At Leidos, you won't just be another administrator-you'll be part of a mission-driven team where your work has real impact. We provide challenging assignments, modern technologies, and a clear path for career growth.
Original Posting:
April 28, 2026
Pay Range:
Pay Range $59,150.00 - $106,925.00
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. 
