In charge of the computer systems all the parts that make a computer function.
Responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.
change security settings, install software and hardware, access all files on the computer, and make changes to other user accounts.
Installing and configuring software, hardware and networks.
Monitoring system performance and troubleshooting issues.
Ensuring security and efficiency of IT infrastructure.