Job Description A Network Engineers main responsibility is to design, plan, configure, implement and monitor computer networks including network infrastructure services, video, data, and voice across all locations. Network types include: WAN, LAN, WLAN, VOIP, VLAN, VPN, SD-WAN and NETOPS. The Network Engineer provides direction and solutions for all aspects of network infrastructure & system standards. They secure network systems by setting up and applying policies, defines and oversees access.