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Job Title: Network Engineer Principal - TS/SCI with Polygraph
Company Name: General Dynamics IT
Location: Chantilly, VA
Position Type: Full Time
Post Date: 03/03/2026
Expire Date: 04/03/2026
Job Categories: Engineering, Information Technology
Job Description
Network Engineer Principal - TS/SCI with Polygraph

NETWORK ENGINEER PRINCIPAL

Transform technology into opportunity as a Network Engineer Principal at GDIT. Shape whats next for mission-critical government projects while shaping whats next for your engineering career.

MEANINGFUL WORK AND PERSONAL IMPACT
As a Network Engineer Principal, the work youll do at GDIT will be impactful to the mission of client.

  • Analyzes customer requirements and provides technical solutions to a wide range of difficult problems.
  • Performs Radio Frequency site surveys, analyze network performance, configure access points/controllers, and troubleshoot connectivity issues. Key requirements include expertise in 802.11 standards, Cisco/Aruba or Bastille hardware.
  • Plans, designs, and deploys network infrastructure (routers, switches, firewalls, load balancers, and wireless devices).
  • Has strong understanding of networking protocols (TCP/IP, OSPF, BGP), VLANs, DNS, and OSI models.
  • Understand Risk Management Frame process to support IA team with Authority To Operate activities.
  • Performs maintenance and upgrade of networks including servers, routers, switches, firewalls, remote access systems, and networks. Be well versed in a multi-vendor environment for layer 2/3 switching and routing protocols (e.g., OSPF, BGP, etc.), Network management solutions, as well as virtual and cloud-hosted networking technologies.
  • Installs, configures, and maintains entire physical networking Wireless Intrusion Detection System (WIDS) infrastructure. Oversee the WIDS implementation, System Development Life Cycle (SDLC), and system/ network administration activities.
  • Operations & Maintenance to include system administration, information assurance, and storage management to all WIDS architectures. Analyzing network performance, resolving, and providing Tier-2/Tier-3 support for network and WIDS incidents.
  • Maintains network integrity and connectivity while ensuring compliance with policies and maintains system backup and recovery capability.
  • Must utilize network monitoring applications for traffic, access, and performance of entire network. Ensuring network reliability through continuous monitoring, proactive maintenance, and system upgrades.
  • Creates and updates technical documentation for network configuration, topology, and mapping.
  • Provide recommendations related to understanding operating system dependencies, physical and virtual server environments, integration with infrastructure resources (e.g. storage and networking), and how to configure operating systems and applications in an efficient manner.
  • Coordinates the acquisition of hardware and software as well as subcontractor services as needed.
  • Evaluates new network solution, capabilities, and technologies to enhance capabilities of the network.
  • Subject matter expert to escalate all IT issues to leadership.
  • Participates in special projects as required.


WHAT YOULL NEED TO SUCCEED
Bring your engineering expertise along with a drive for innovation to GDIT. The Network Engineer Principal must have:
Education: Bachelor of Arts/Bachelor of Science
Experience: 8+ years of related experience
Technical skills: Westfields experience, Wireless Intrusion Detection System (WIDS) implementation, System Development Life Cycle, system/network administration activities, Windows and Linux systems experience a must.
Security clearance level: TS/SCI with polygraph

US citizenship required

Role requirements: Onsite client and travel required

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
Growth: AI-powered career tool that identifies career steps and learning opportunities
Support: An internal mobility team focused on helping you achieve your career goals
Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and youll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

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Contact Information
Company Name: General Dynamics IT
Website:https://www.gdit.com/careers/job/9659b2b25/network-engineer-principal-tssci-with-polygraph/?source=AutoAppend_HBCU
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