Systems Network Administrator I/Service Desk Support

Systems Network Administrator (TS/SCI w/ Poly)

Leidos - National Security Sector | Cyber & Analytics Business Area (CABA)

Make a Difference in National Security

Leidos has an exciting opportunity for a Systems Network Administrator to join our National Security Sector's Cyber & Analytics Business Area (CABA). Our team is at the cutting edge of Security Engineering, Computer Network Operations (CNO), Mission Software, SIGINT, and advanced analytics-delivering solutions that directly support critical national security missions.

If you're looking for meaningful work, a collaborative team environment, and opportunities to grow your technical skills, this is the role for you.

Why Join Leidos?

We believe in supporting our employees both professionally and personally. That's why we offer:

• 401(k) with 6% company match + immediate vesting
• Generous PTO + 11 paid holidays
• Flexible work schedules
• Paid parental leave
• Technical upskilling, training, and education support
• Employee stock purchase plan
• And much more

What You'll Do

In 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 (
• 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.

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:

April 28, 2026

For 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.

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.