Senior Data Center Network EngineerWe are seeking a Senior Data Center Network Engineer with 10+ years of enterprise and data center networking experience to support the structured decommissioning of brownfield data center infrastructure. The right candidate has deep hands-on experience with Cisco platforms, multi-vendor environments, and has personally executed device retirements — not just supervised them.Key ResponsibilitiesConduct network audits to identify devices targeted for decommissioningBack up configurations, VLAN databases, and routing tables prior to any retirement activityDesign and execute traffic migration strategies to reroute services before decommissioningDecommission routers, switches, and firewalls; update network diagrams and topology documentation accordinglyMigrate legacy platforms (e.g., Catalyst 6500, Brocade) to modern infrastructure (Nexus 7K/5K/2K) as part of consolidation effortsLead terminal server consolidation and streamline out-of-band access methodsPerform post-migration validation (PAT/NRFU) to confirm service continuityOperate within change-controlled environments with CAB approval processesCollaborate with cross-functional teams to coordinate decommission timelinesRequired Technical SkillsRouting protocols: OSPF, BGP, EIGRP, MPLSSwitching: VLANs, VTP, STP/MSTP, EtherChannel, vPC, VDC, OTVCisco Nexus (9K, 7K, 5K, 2K), Catalyst (6500, 9300, 4500), ASR routersCisco ACI — Spine-Leaf architecture, fabric path, legacy integrationJuniper MX/EX switches and routers a plusF5 BIG-IP LTM/GTM experience a plusEVPN, VXLAN, data center fabric technologiesPython scripting and/or Ansible for configuration auditing and automationNMS tools: SolarWinds, CiscoWorks, or equivalentProficient in network diagramming (Visio or equivalent)CertificationsCCNP required (Enterprise or Data Center track)CCIE Data Center strongly preferredPMP or ITIL Foundation a plus