*Take ownership of customer issues reported and see problems through to resolution via email and phones. Supervise and delegate the workload to ensure the job done correctly.
*Troubleshoot and Configuration of router and switch equipment such as VTP, RSTP, VLAN, VACL, Etherchannel, PBR, ACL, Port Security, NAT, SNMP and network routing.
*Setup, Configuration, & Managing Firewalls (Cisco & Juniper), Proxy Server (Sangfor IAM & Endian)and wireless access point. Setup and configuration of VMSphere Esxi 5.5, 6.5 and Xenserver for virtualization of servers.
*Handled the network security and server security of the company. (Like identifying, analyzing, remediation of vulnerabilities found in IT Infrastructure.) *Setup, configuration, manage and troubleshoot of Windows server 2008 or windows server 2012 R2 (Active Directory, DHCP (DHCP Failover), DNS, Group Policy Management, WSUS, Network Policy Replication of domain controller and Group Policy).
*Maintain, improve and monitor server and network devices. (Server Performance, storage availability, uptime, bandwidth utilization, WAN and LAN connectivity, routing, firewalls and etc.). Configuration or establishing IPSec tunnel (VPN tunnel) between the clients of the company.

*Front & back- end Support on Store operations/ Head Office. Maintaining the store network connection.
*Updates data on Front- End system (price change, new items, and items updates).
*Responsible for support in in-house program of back office. Ensure the functionality of POS Server and Windows 2008 Server.
*Performs installation, troubleshooting, and preventive maintenance of PC and Printer.
*Managed and Administered Windows XP, Windows 7 and Linux mint workstations.
*Managed the configuration of Active Directory, DNS and Group Policy. *Performs daily data backup of servers (POS Server, Windows Server and SQL). *Utilized problem solving and troubleshooting abilities to resolve any major issues.