Responsibilities: Possess network planning capabilities, design network solutions, and handle deployment and maintenance, with the ability to resolve complex network faults. Responsible for the daily configuration, inspection, and maintenance of core network devices (switches, routers, firewalls) to ensure high availability of network links. Monitor network operation status in real time, quickly locate and resolve network faults through traffic analysis and log inspection to minimize business interruption risks. Develop and implement network security policies, including access control, vulnerability scanning, and patch management, to ensure data transmission and system security. Regularly optimize network topology and bandwidth allocation to improve overall network performance and support efficient operation of business systems. Responsible for daily maintenance and troubleshooting of office endpoint devices such as computers and printers to ensure stable device operation. Manage internal network access, account permissions configuration, and system software installation/upgrades to maintain a smooth office environment. Establish equipment maintenance records, regularly inspect hardware status, and proactively identify and address potential issues. Respond to employee IT support requests, providing timely technical guidance and problem solutions. Requirements: Bachelor's degree or above; preference for candidates majoring in Computer Networking or related fields. 3+ years of relevant work experience; proficient in TCP/IP protocol stack, OSI model, routing and switching technologies, VLAN segmentation, network security, etc. Familiar with Windows/Linux operating systems; master the basic principles and troubleshooting methods for desktop hardware and network devices; with certain scripting and debugging capabilities. Proficient in SDN network technologies, VPN, IP tunneling, and other related technologies, with hands-on experience. Experienced in configuring and mana