IT technical support engineer job description
Exact responsibilities can vary depending on the type of organisation and industry, but as a general rule you will be required to:

Install and configure computer hardware, software, networks and applications
Continuously monitor and maintain systems and networks
Respond to technical support calls from other staff members or clients and communicate how to resolve issues
Diagnose and troubleshoot system and network problems, software faults or hardware complications
Support the roll-out of new applications
Keep a record of issues, along with solutions, to refer back to in future instances