TS/SCI Systems Network Administrator – Tier 1

Leidos Inc; Laurel (MD); On-site; USD 59,000 - 107,000; Full time

Benefits offered by this job

401(k) with company match plus vesting

Generous PTO and 11 holidays

Flexible work schedules

Paid parental leave

Technical upskilling and education

Job summary

Leidos is seeking a Systems Network Administrator (TS/SCI w/ Poly) to join the National Security Sector's Cyber & Analytics Business Area. The role supports enterprise IT systems, end users, and mission-critical operations in a collaborative team environment.

The position requires 5+ years in systems administration, a technical bachelor's degree, and active TS/SCI with Polygraph. CompTIA Security+ is required, with multiple certifications encouraged for growth.

Qualifications

• 5+ years of Systems Administrator experience or similar role.
• Bachelor's degree in a technical field (experience can substitute).
• Active TS/SCI with Polygraph is required.
• CompTIA Security+ is current.

Responsibilities

• Support 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 config changes.
• Manage user accounts, password resets, VPN access, and PKI 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 to track and resolve issues.

Skills

Systems Administration

Customer support

Documentation

Education

Bachelor's degree in technical field

Active TS/SCI with Polygraph

CompTIA Security+ (current)

Microsoft Certifications (MTA/MCSE)

Tools

Ticketing systems

PKI management

Job description

Leidos is seeking a Systems Network Administrator (TS/SCI w/ Poly) to join the National Security Sector's Cyber & Analytics Business Area. The role supports enterprise IT systems, end users, and mission-critical operations in a collaborative team environment.

The position requires 5+ years in systems administration, a technical bachelor's degree, and active TS/SCI with Polygraph. CompTIA Security+ is required, with multiple certifications encouraged for growth.