System administrators—also known as sysadmins—are information technology (IT) professionals who make sure an organization’s computer systems are functioning and meet the needs of the organization. Sysadmins support, troubleshoot, and maintain computer servers and networks.
Managing Windows, Linux, or Mac systems
Upgrading, installing, and configuring application software and computer hardware
Troubleshooting and providing technical support to employees
Creating and managing system permissions and user accounts
Performing regular security tests and security monitoring
Maintaining networks and network file systems