• Administer/Migrate 500+ VDIs from VDM 2.x on ESX 3.5 stack to View 4.6 on ESXi 4.1 farm in a multi-hosts cluster with N+1 HA configuration for multiple offshore and domestic clients office locations.• Architect and Deploy View 4.6 environments using mix Linked Clone/Full Clone pools via Wyse P20 zero client appliance in a multi-tenant environment.• Create MSI packages via ThinApp and deploy to individual/pool VDI.• Build and Administer a new multi-clients View 4.6 environment via Cisco UCS Manager 2.0 with a configuration of UCS 5108 Chassis with three B250 series blades and two 6140XP Fabric Interconnects.• Upgrade and migrate VDIs from VDM 2.x to View 4.6 ======• Provided daily support/administration to multiple hosted clients, which comprises of 50 ESX3.5/ESXi 4.1 hosts and 1500+ Windows and Linux guests in various cluster virtual farms..• Performed periodical Vmware hosts and guests patch updates , as well as performed parallel upgrades from ESX3.5 to ESXi 4.1.• Planned and coordinated datacenter forklift moves for new acquisitions• Monitored/tuned performance and capacity planning via Capacity IQ and BMC, Nagios.• Built and provisioned HP and Dell servers with Fiber HBA for SAN storage environment, and ESX hosts.• Implemented availability features for ESX3.5/ESXi 4.1 including VMotion, HA, Virtual SMP, DRS, Vswitch design, performance troubleshooting.• Consolidated physical servers by using Acronis and Vmware Convertor for P2V process and performing tuning.• Acted as a technical lead on various projects for multiple hosting clients farms.• Provided a secure environment, managing and mitigating risks as well as generating/auditing periodic permission and capacity metric report.• Created, reviewed, maintained, and updated documentation/runbooks.• Investigated & Troubleshoot root causes when escalated from Operations and participated 24/7 on-call rotation.• Performed Disaster Recovery tests for various clients environments.