Jeff Chang is an IT Systems expert with extensive, in-depth knowledge of servers, LAN/WAN networking, VoIP, IP Video Surveillance, and IT security. He has planned, supported and managed major network/server/system rollouts, upgrades and provides on-going support for a number of DVI clients. Mr. Chang has also deployed, managed, operated and maintained complete IT infrastructure for small and medium DVI clients. He also performed applications software development and telecommunications systems analysis.

Mr. Chang has conducted network traffic and performance studies on both data and voice networks, and has developed telecommunications and database applications. Mr. Chang has also implemented Firewall/VPN (site-to-site hub-and-spoke) for many clients, with link redundancy, multi-homing, traffic load-balancing, and high availability solutions. He also implemented Ethernet three-layered hierarchical switched networks, Wi-Fi networks, Site-to-Site disaster recovery and business continuity backup solution, Symantec Protection Suite Enterprise Edition (on physical appliances and VMware platform), Barracuda Networks products, other security software, and hosted security solutions for SMTP filtering security, web contents security, Anti-Spyware solutions for customers. Mr. Chang received his M.S. degree in Computer Science from the New Jersey Institute of Technology.