1. Install, upgrade and monitor software and hardware.
2. They usually maintain the essentials such as operating systems, business applications, security tools, web-servers, email, PCs, local and wide area networking both hardware and software and mid-range server hardware.
3. Other duties may include scripting or light programming, project management for systems-related projects.
4. Responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.
5. change security settings, install software and hardware, access all files on the computer, and make changes to other user accounts.