Senior Network Engineer

General Dynamics • Oak Ridge, TN

236d • $75,225 - $101,775 • Remote

About The Position

Transform technology into opportunity as a Network Engineer with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you'll be at the forefront of innovation and play a meaningful part in improving how agencies operate. At GDIT, people are our differentiator. As a Network Engineer you will help ensure today is safe and tomorrow is smarter. Our work depends on Network Engineer joining our team to perform on client site as Infrastructure Operations Lead, a key position responsible for leading the IT Infrastructure Operations contractor team that provides operations and maintenance to the customer network and systems. The Infrastructure Operations lead is responsible for maintaining and operating the hybrid infrastructure, that includes a combination of on premise and cloud-based infrastructure. Infrastructure operations shall support and maintain the Local Area Network (LAN), Wide Area Network (WAN), Wireless Local Area Network (WLAN) and data center infrastructure to ensure an effective and efficient IT environment for its customers.

Requirements

• Bachelor's degree in Information Technology or related field.
• At least 7 years of relevant experience.
• Experience with all aspects of enterprise network operations.
• Ability to obtain a public trust equivalent.
• Problem solving, team management, customer status communications.
• Expert knowledge of TCP/IP, BGP, OSPF, DMVPN, DNS, DHCP.
• Cisco routing/switching with Nexus 9K, Catalyst, ISR, and C8500 series.
• Strong Palo Alto experience including SSL decryption, HA configuration, and IPS tuning.
• Azure networking including ExpressRoute, NSGs, virtual WAN, peering, VPNs.
• Familiarity with Cisco ACI or willingness to rapidly train up for deployment.
• Experience leading physical buildouts and Data Center Moves: rack layout, cable management, port planning.
• PowerShell or Python scripting for automation and config deployment.

Nice To Haves

• CCIE, PCNSE, or additional Azure network/security certs.
• Experience with Cisco ISE, DNA Center, and SD-WAN.
• Experience in a federal or DOE environment.
• Prior Engineering leadership in large-scale infrastructure projects to include Data Center Moves.
• Experience implementing Azure Front Door, WAF, Private Link, or NAT Gateway.
• Experience working for the Federal Government as an IT Contractor.

Responsibilities

• Serve in a dual-capacity role that balances high-level network design and architecture responsibilities with day-to-day operational support and device configuration across enterprise environments.
• Administer and maintain a multi-site enterprise network, including the configuration and lifecycle management of routers, switches, firewalls, VPNs, wireless infrastructure, and load balancing technologies.
• Develop scalable and resilient network architectures that support high availability, fault tolerance, and future growth, with an emphasis on alignment with DOE enterprise IT strategy and security policies.
• Engineer and support complex routing strategies involving protocols such as EIGRP, OSPF, and BGP; ensure optimal route redistribution, convergence, and path selection across hybrid connectivity models including DMVPN and MPLS.
• Implement and manage next-generation firewall platforms (e.g., Palo Alto), including high availability configuration, SSL decryption, policy optimization, IDS/IPS system configurations, and integration with cloud and on-premises security architectures.
• Design, deploy, and manage hybrid network topologies within Microsoft Azure, including Virtual Networks (VNets), ExpressRoute, peering, NAT Gateway, and firewall solutions to ensure secure and performant cross-premise connectivity.
• Support the implementation and management of NAC solutions such as Cisco ISE, including potential integration with Microsoft Intune to enforce endpoint compliance and identity-based access control.
• Lead and execute infrastructure modernization initiatives, including the planning, implementation, and validation of new networking technologies or the re-architecture of existing environments.
• Leverage network performance tools such as Catalyst Center, SolarWinds and Azure Network Watcher to monitor availability, perform root cause analysis, and implement performance enhancements.
• Maintain accurate technical documentation including topology diagrams, configuration baselines, IP address management, and change control records to support audit readiness and operational continuity.
• Partner with adjacent IT disciplines-including cloud, systems, security-to deliver integrated solutions; provide mentorship and technical leadership to junior technical staff as needed.

Benefits

• 401K with company match.
• Comprehensive health and wellness packages.
• Internal mobility team dedicated to helping you own your career.
• Professional growth opportunities including paid education and certifications.
• Cutting-edge technology you can learn from.
• Rest and recharge with paid vacation and holidays.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: Transportation Equipment Manufacturing
• Education Level: Bachelor's degree