Support Technician. The Support Technician will be involved in the installation, modification, support and monitoring of clients’ networks and computer systems. Exceptional analytical skills are required to troubleshoot issues and deliver secure, creative, value-driven solutions. Senior IT Support Technician Job Duties. Provide different levels of IT support to clients in all verticals. Work with VPN, LAN, WAN, VLAN, and DMZ. Continually improve ...