The System Administrator is the primary person responsible for managing and maintaining the computer and network system for the enterprise.

Responsible for configuration, maintenance, monitoring, and disposal of computers, servers, networking and related equipment
Responsible for planning and performance of storage and backups
Secure systems using industry best practices such as 2FA, least privilege, etc.
Assist with helpdesk including all maintenance needed on-site
Install and maintain software and cloud services such as Office 365
Maintain documentation and assist with audits