> Markdown version of [/jobs/ext/4560205-network-engineer-principal-ts-sci-with-polygraph](https://www.wearedevelopers.com/jobs/ext/4560205-network-engineer-principal-ts-sci-with-polygraph). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer Principal - TS/SCI with Polygraph - **Company:** General Dynamics Information Technology - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $142,792.0 - $161,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Border Gateway Protocol, Data Transmissions, Linux, Domain Name System (DNS), OSI Models, Network Configuration and Change Management, Network Architecture, Network Monitoring, Network Administration, Network Protocols, Open Shortest Path First (OSPF), Systems Development Life Cycle, Remote Access Technology, Server Virtualization, TCP/IP, Virtual Local Area Networks, Wireless Intrusion Prevention Systems, Wireless Access Point, Network Routers, Data Storage Management, Load Balancing, Computer Network Technologies, Reliability of Systems, Wireless Devices, Firewalls (Computer Science), Routing & Switching, Network Server, Cisco - **Published:** November 4, 2026 - **Apply:** https://dejobs.org/x/x/B29425CB35914D198CC88396EB33750C/job/ ## About the Role Data Communication,Network Engineering,Network Management Experience: 8 + years of related experience, 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 ## Description As a Network Engineer Principal, the work you'll 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.