The Network Systems Engineer Job involves overlooking the operation of LAN/WAN related network services. The engineers should take care of the network software and hardware upgrades. They have to work in collaboration with the other network staff to resolve any information security issues. Network Engineer handle installing, configuring, and supporting firewalls to ensure network security. Having an active network remains essential . The engineer must efficiently manage DNS, email, IP address, logical architecture, network traffic monitoring and shaping as well as other network-related services.