Senior Network Engineer

Job Description We are seeking an experienced Senior Network Engineer to design, implement, support, and troubleshoot complex enterprise network infrastructure. This role is highly hands-on and requires someone who can operate at both the architecture/design level and the implementation level. The ideal candidate has extensive experience with enterprise routing and switching, SD-WAN, wireless, data center connectivity, campus networks, and network architecture. This individual should be comfortable taking ownership of a network deployment from initial design and cabling requirements through implementation, troubleshooting, documentation, and ongoing support. Travel is required for office, campus, data center, and infrastructure deployment projects. Key Responsibilities * Design, architect, implement, and support enterprise network infrastructure across offices, campuses, and data center environments. * Lead network deployments for new offices, buildings, and campus locations from the ground up. * Develop network architecture, topology, IP addressing, routing, switching, wireless, security, and connectivity designs. * Configure, deploy, and troubleshoot Cisco routers, switches, wireless infrastructure, and SD-WAN solutions. * Design and manage complex routing environments using BGP, OSPF, and EIGRP, with particular emphasis on BGP. * Develop and implement resilient network architectures with appropriate redundancy, high availability, and failover. * Work with data center and colocation providers, including Equinix, to establish and manage connectivity. * Configure and manage Equinix Fabric connections and related network connectivity. * Evaluate and validate physical network infrastructure, including structured cabling, fiber, copper, patch panels, racks, and network demarcation points. * Provide technical leadership during network moves, office openings, infrastructure upgrades, and network refresh projects. * Troubleshoot complex network issues across Layer 1-Layer 3 and beyond, including routing, switching, wireless, WAN, SD-WAN, and connectivity issues. * Use packet-analysis and troubleshooting tools such as Wireshark to identify and resolve complex network problems. * Develop detailed network topology diagrams, architecture diagrams, implementation plans, and operational documentation. * Establish and document network standards, procedures, and processes. * Participate in network monitoring, performance analysis, capacity planning, and infrastructure optimization. * Collaborate with security, systems, cloud, facilities, and other technology teams on infrastructure projects. * Participate in after-hours maintenance windows and provide escalation support when required. Required Qualifications * 10+ years' enterprise networking experience in a Senior Network Engineer or Network Architect capacity. * Strong hands-on experience with Cisco networking equipment, including routers and switches. * Extensive knowledge of dynamic routing protocols, particularly: * BGP * OSPF * EIGRP * Strong understanding of TCP/IP, VLANs, STP, EtherChannel, HSRP/VRRP, DHCP, DNS, NAT, and other core networking technologies. * Proven experience designing and implementing enterprise network architectures. * Hands-on experience with S