- Installed, configured, and supported local area network (LAN), wide area network (WAN) and Internet system.- Managed data backups and disaster recovery operations for 240-person company.- Implemented corrective plans of action for network performance issues including availability, utilization, and latency.- Performed system maintenance and upgrades, including patches, service packs, hot fixes and new security configurations.- Installed, maintained and supported all network and voice-related hardware, software and communication links for design.- Configured, monitored and maintained email applications and virus protection software.- Managed and maintained stability of all network and wireless services throughout enterprise.- Maintained network hardware and software and monitored network to ensure network availability to end users.- Constructed and maintained Virtual Local Area Network (VLAN).- Installation Passive Network (cabling, duct, switching panel, …)- Set up and controlled user profiles and access levels for each database segment to protect important data.- Hardware debugging

- Managed data backups and disaster recovery operations for 30 person company.- Performed system maintenance and upgrades, including patches, service packs, hot fixes and new security configurations.- Monitored stability of network and wireless services to ensure comprehensive stability.- Rewrote and updated group policy with new domain move and domain level raise.- Installed, configured, and supported local area network (LAN), wide area network (WAN) and Internet system.- Assigned application access, security roles and permissions.- Increased domain levels by closely managing windows domain move.- Installed, maintained and supported all network and voice-related hardware, software and communication links for design.