Type of Requisition:RegularClearance Level Must Currently Possess:NoneClearance Level Must Be Able to Obtain:NonePublic Trust/Other Required:OtherJob Family:Network EngineeringJob Qualifications:Skills:Enterprise Network, Network Administration, Network Engineering, System AdministrationCertifications:NoneExperience:7 + years of related experienceUS Citizenship Required:YesJob Description:Network Engineer/SpecialistTransform 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.HOW A NETWORK ENGINEER WILL MAKE AN IMPACT•The Senior Network Engineer is a hybrid operations and engineering role responsible for both the day-to-day administration of network infrastructure and the design and execution of enterprise network modernization efforts. This position plays a critical role in both maintaining secure, high-performance connectivity and leading infrastructure projects such as core network redesign, cloud integration, and security architecture improvements. The ideal candidate combines deep technical skills with the ability to lead, plan, and execute at an engineering level.•Key Responsibilities• Hybrid Engineering and Administration: 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.• Network Infrastructure Management: 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.• Architecture and Design: 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.• Routing and Protocol Engineering: 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.• Firewall and Security Integration: 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.• Cloud and Hybrid Networking: 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.• Network Access Control (NAC): 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.• Project Leadership: Lead and execute infrastructure modernization initiatives, including the planning, implementation, and validation of new networking technologies or the re-architecture of existing environments.• Monitoring and Performance Optimization: Leverage network performance tools such as Catalyst Center, SolarWinds and Azure Network Watcher to monitor availability, perform root cause analysis, and implement performance enhancements.• Documentation and Standards Compliance: Maintain accurate technical documentation including topology diagrams, configuration baselines, IP address management, and change control records to support audit readiness and operational continuity.• Cross-Functional Collaboration and Mentorship: Partner with adjacent IT disciplinesincluding cloud, systems, securityto deliver integrated solutions; provide mentorship and technical leadership to junior technical staff as needed.WHAT YOU’LL NEED TO SUCCEED: Education: Bachelor’s degree in Information Technology or related field Required Experience: At least 7 years of relevant experience Required Technical Skills: Experience with all aspects of enterprise network operations Security Clearance Level: Ability to obtain a public trust equivalant Required Skills and Abilities: Problem solving, team management, customer status communications:Technical Competencies:o Expert knowledge of TCP/IP, BGP, OSPF, DMVPN, DNS, DHCPo Cisco routing/switching with Nexus 9K, Catalyst, ISR, and C8500 serieso Strong Palo Alto experience including SSL decryption, HA configuration, and IPS tuningo Azure networking including ExpressRoute, NSGs, virtual WAN, peering, VPNso Familiarity with Cisco ACI or willingness to rapidly train up for deploymento Experience leading physical buildouts and Data Center Moves: rack layout, cable management, port planningo PowerShell or Python scripting for automation and config deploymentPreferred Qualifications• 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 Location: On Customer Site- Oak Ridge, TN US Citizenship RequiredGDIT IS YOUR PLACE: 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 holidaysThe likely salary range for this position is $75,225 - $101,775. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:40Travel Required:NoneTelecommuting Options:OnsiteWork Location:USA TN Oak RidgeAdditional Work Locations:Total Rewards at GDIT:Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans