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# Network Administrator Senior_TS/SCI with Polygraph

- **Company:** General Dynamics Information Technology
- **Location:** Alexandria, VA, United States
- **Experience:** Expert
- **Salary:** $106,250.0 - $143,750.0
- **Contract:** Permanent contract
- **Skills:** Communications Protocols, CompTIA Security+, Data Transmissions, Virtual Private Networks (VPN), Remote Access Technology, Wide Area Networks, Network Routers, System Availability, Firewalls (Computer Science), Information Technology, Network Server
- **Published:** September 10, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=00d77e97e4f01279

## About the Role

Bring your technology expertise and drive for innovation to GDIT. The Network Administrator Senior must have:

 * Education: Technical Training, Certification(s) or Degree
 * Experience: 3+ years of related experience
 * Technical skills:

 * Must have experience with Intelligence Community customer
 * Must have experience working with mid and senior level government
 * Must have experience supporting classified government networks
 * Certifications in networks highly desired

 * Security clearance level: TS/SCI with Polygraph
 * US citizenship required
 * Location: On Customer Site, 3 + years of related experience
 * may vary based on technical training, certification(s), or degree

Certification

CompTIA Security+ CE | CompTIA - CompTIA
Travel Required

10-25%
Citizenship

## Description

Own your opportunity to serve as a critical component of our nation's safety and security. Make an impact by using your expertise to protect our country from threats., As a Network Administrator Senior, the work you'll do at GDIT will be impactful to the mission of our customer. You will play a crucial role in providing network engineering and administration of multiple classified and unclassified networks that connect mission-critical IT systems in support of the customer's global mission operations.

 * Collaborate with other IT system team members and the Government to maintain and enhance mission IT systems
 * Maintain high availability to ensure readiness for 24x7 mission operations
 * Drive innovative solutions to solve challenging network and mission IT system challenges that support mission
 * Analyzes customer requirements and provides technical solutions to a wide range of difficult problems
 * Performs administration, maintenance and upgrade of networks including servers, routers, switches, firewalls, remote access systems, and networks
 * Administers and maintains network integrity and connectivity while ensuring compliance with policies and maintains system backup and recovery capability
 * Coordinates the acquisition of hardware and software as well as subcontractor services as needed
 * Creates plans and configure systems for data communication networks
 * Designs and builds hardware and software components for computer or telecommunications networks
 * Evaluates new communications technologies to enhance capabilities of the network
 * Designs, plans, and builds communications networks. Configures routers, switches, and firewalls for LAN and WAN systems and VPN concentrators with appropriate network engineering and communications protocols. Coordinates LAN/WAN hardware/software improvements and/or enhancements. Monitors networks utilizing industry leading processes, technologies and tools. Provides innovative methods and technical solutions using the engineering design process. Plans implementation of enhancements to LAN/WAN networks. Maintains current knowledge of relevant technology as assigned
 * May coach and provide guidance to less experienced professionals
 * May serve as a team or task lead
 * Participates in special projects as required.


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