System administrator - sysadmin—an information technology (IT) professional.
#Making sure an organization’s computer systems are functioning and meet the needs of the organization.
#Support, troubleshoot, and maintain computer servers.
#Managing Windows, Linux, or Mac systems.
#Upgrading, installing, and configuring application software
#Troubleshoot and provide 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.