• Architected and led datacenter network upgrade from Cisco 6500 VSS to Nexus 7000 Core utilizing vPC, Fabric Extenders, VDCs and new WAN aggregation layer with minimal downtime.• Assisted with architecture and led migration and implementation of EU datacenter to secure hosted facility utilizing 3750X stack core, dual MPLS layer 3 circuits using BGP, layer 2 DC interconnect, with WAN optimization, redundant routers, firewalls and load balancers.• Defined requirements for high volume global Web presence with development team, designed and implemented highly redundant solution utilizing multiple Internet circuits and dual-homed BGP peering, redundant load balancers, firewalls and routers.• Redesigned and implemented QoS for global converged voice, video and data network utilizing multiple providers, using Cisco Modular QoS CLI on redundant routers and switches• Upgraded network infrastructure to support customer facing real-time retail applications leveraging QoS and dual redundant MPLS clouds connecting to numerous 3rd party datacenters.• Designed and installed 10gb connected Hadoop cluster using dual Nexus 5500’s and virtual port channel aggregation for maximum redundancy and throughput.• Perform network maintenance, upgrades and troubleshooting to ensure a stable enterprise environment; coordinate with other teams to determine network requirements for various projects; assist and train co-workers on company best practices, troubleshooting, and daily duties

• Led wireless project of complete ground up installation of global Cisco wireless network using centrally managed controllers, lightweight access points, certificate based 802.1X authentication for cooperate WLAN and web based authentication for isolated guest access. • Assisted with global network refresh project that included upgrading routers, switches, firewalls, Riverbed appliances and F5 load balancers in several European offices.• Performed several new office installs and office re-locations which involved coordinating existing circuit moves and new circuit instalations, equipment purchases, network rack installations, phone system installation and all required testing prior to office opening.• Assisted with upgrade of US and European Call Manager clusters from 6.0 to 7.0, new IPCC servers and software; converted all US remote offices from local PRIs to SIP trunking for added redundancy.• Daily duties included general monitoring of all enterprise network devices and logs; perform network maintenance, upgrades and troubleshooting to ensure a stable environment; perform daily on call duties which involve 24/7 support for critical systems and applications.