A network systems administrator performs a wide range of duties related to the daily operations of a company’s servers and networks. As a network systems administrator, your primary responsibilities include designing and implementing new networks or server towers and integrating a company’s computer systems into the new networks. You also oversee all troubleshooting, maintenance, and quality assurance related to server and network technology, such as security issues, password management, and connectivity. You may also train other employees on how to use network systems after upgrades.