We are seeking a highly skilled and self-motivated Network Engineer to support a large-scale enterprise program. This position involves the design, implementation, support, and maintenance of a complex network environment consisting of Juniper and Cisco switches, load balancers, and boundary devices. The ideal candidate will have experience managing networks that support hundreds of thousands of endpoint devices and must have a strong understanding of network security compliance and software-defined networking (SDN) practices. The engineer will also be responsible for utilizing Forward Networks software to create virtual network clones, test SDN code upgrades, and assist with comprehensive documentation of the current network infrastructure. MEANINGFUL WORK AND PERSONAL IMPACT Provide day-to-day operational support, troubleshooting, and maintenance of enterprise-scale Juniper and Cisco switching infrastructure Configure and maintain load balancing technologies and boundary security devices (e.g., firewalls, edge routers). Leverage Forward Networks to: Build virtual replicas of the production network. Simulate and validate SDN code changes. Document the existing physical and logical network topology. Ensure network integrity, performance, and security for a distributed infrastructure supporting several hundred thousand endpoints. Monitor and respond to network incidents, lead root cause analysis and resolution efforts. Maintain and update network diagrams, configurations, and documentation in accordance with industry and organizational standards. Ensure compliance with security policies and regulatory requirements. Participate in planning and executing network upgrades, migrations, and optimizations. Collaborate with cross-functional teams including cybersecurity, infrastructure, and application teams. Work independently with minimal supervision while proactively identifying and resolving network issues. WHAT YOU'LL NEED TO SUCCEED Bring your engineering expertise along with a drive for innovation to GDIT. The Network Engineer Senior must have: Education: Bachelor of Arts/Bachelor of Science