Provided complete Windows 2003 and 2008 R2 Servers administration including all aspects of both hardware and software.Maintained network using Active Directory 2003, 2008 R2 and Exchange 2010 management tools.Performed hands-on administration, monitoring, and troubleshot of Local Area Network (LAN), resulting in optimum performance and minimum downtime.Handle day-to-day BES and BlackBerry related technical problems.Provided all technical and troubleshot support with hand-held devices.Supported and executed upgrade on all operating systems and Servers (OSes, AD, Exchange Server, BESx Server) to latest SPs. BES account creation and deletionActivated BlackBerry Smartphone for usersIdentified and repaired Hardware failure/conflicts in users day to day operations.Setup and configured PC's for new users.Upgraded BlackBerry devices firmwareResending IT Policy and Service bookImplemented Microsoft Outlook Calendar Sharing to all staffs.Wrote a proposal to upgraded slow WAN network usage between the offices.