System Administrator Responsibility
responsible for the maintenance, configuration, and reliable operation of computer systems and servers. They install hardware and software, and participate in research and development to continuously improve and keep up with the IT business needs of their organization. System administrators also actively resolve problems and issues with computer and server systems to limit work disruptions within the company.
Network Engineer Responsibility
Configuring and installing various network devices and services (e.g., routers, switches, firewalls, load balancers, VPN, QoS) Performing network maintenance and system upgrades including service packs, patches, hot fixes and security configurations.