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Job Description & Key Responsibilities:
Infrastructure & Network Management: Designed, configured, and optimized the complete enterprise LAN/WAN network infrastructure from the ground up, implementing efficient VLAN segmentation and secure network isolation. 
Technical Support & Troubleshooting: Provided high-tier physical and remote technical support, rapidly diagnosing and resolving complex hardware, software, and local infrastructure anomalies to maintain a 99.9% operational uptime. 
System Administration: Managed Windows Server environments, Active Directory, user access permissions, and deployed VMware virtualization platforms alongside automated disaster recovery protocols. 
Network Security: Maintained network perimeter security by configuring and managing Fortinet/Fortigate firewall policies, web filtering, and secure user access controls. 
Unified Communications & Surveillance: Oversees the deployment, configuration, and maintenance of enterprise-grade CCTV surveillance networks (NVR/IP Cameras) and Fanvil IP Phone communication systems. 
System Integration: Successfully customized, deployed, and integrated the ZKTeco BioTime biometric attendance software with existing local infrastructure. 
Healthcare IT Support: Managed and maintained critical Healthcare Information Systems (HIS) and Electronic Health Records (EHR) platforms, ensuring data safety and zero operational downtime for medical staff.