Key Responsibilities:Infrastructure Management: Led multiple teams consisting of over 20 onshore and offshore professionals responsible for network, outsourced voice, server, storage, database, and backup functions.Project Management: Coordinated and supervised human resources and external vendors to ensure timely and budget-compliant completion of all projects.Key Achievements:Offices Consolidation: Successfully consolidated two offices into a single location in Hong Kong and facilitated the relocation of the retail lab.Backup System Upgrade: Oversaw the upgrade and replacement of the tape backup system in the data center.Core Switch Replacement: Managed the replacement of the Nexus core switch following an upgrade failure.AD Users Assignment: Managed the Service Desk team and server team to identify all India users and assign them to the appropriate Active Directory entity group.

Key Responsibilities:Communication Skill: Engaged in effective communication, negotiation, and illustration with branch office heads and the corporate IT team to successfully deliver satisfactory IT solutions aligned with the goals.Inventory Management: Conducted inventory management for over 400 network and server devices, including hostname, model number, S/N, IP address, firmware version and tracking maintenance expiration dates.IT budgeting and forecasting: Developed and managed IT budgets and forecasts, ensuring optimal allocation of resources while controlling costs and aligning expenditures with organizational goals.Key Achievements:Disaster Recovery Coordination: Investigated the damage caused by a fire in the India Factory server room, devised a restoration plan, and effectively coordinated the recovery of the IT infrastructure while maintaining normal daily operations.Teamwork and Collaboration: Collaborated with the IT headquarters to construct a new India BTG office with 800 users, implementing a new infrastructure design powered by Meraki and a new SIP trunk voice gateway.Wifi System Upgrade: Managed the upgrade of the Aruba WiFi system in all 5 different APAC warehouses.

Key Responsibilities:IT budgeting and forecasting: Developed and managed IT budgets and forecasts, ensuring optimal allocation of resources while controlling costs and aligning expenditures with organizational goals.Managing contracts: Managed and renewed support contracts of MPLS connections, internet services, voice trunks for 26 APAC offices, and maintenance agreements for over 400 network and server devices, ensuring seamless service continuityVendor Management: Managed relationships with 3rd party vendors to ensure service competitiveness, and consistently met SLAs for response times, issue resolution, and customer satisfaction.Relocation Management: Oversaw and coordinate for relocating, setting up, and establishing different offices, ensuring smooth operations post-move.Team Training & Optimization: Provided training and mentorship to the LAN/WAN network and voice team to enhance their ability to effectively resolve network issues reducing troubleshooting time by 50%Off-shore Transition: managing and transitioning network management to the off-shore network and voice team.Key Achievements:VPN Setup: Deployed site-to-site VPN as redundancy connections among 26 APAC offices, Anyconnect SSL VPN, and IPSec VPN for remote access in the APAC data centerOffices Setup & Relocation: Successfully relocated 24 different APAC offices and one of them has 400 users.(Japan HQ, WH, CS, Korea HQ, WH, CS, Malaysia HQ, CS, Singapore, Taiwan, India HQ, CS, WH, China QC, SH, SH WH, BJ, PT, SZ, Hong Kong TST, CDW, KCC, and Vietnam)VoIP System Migration: Successfully migrated the internal VoIP system to a third-party vendor for management across all 16 APAC officesChina VPN Deployment: Successfully deployed Google Email and Apps in China via VPN.

Key Responsibilities:Network Management: Daily management of 1800 network devices, including routers, switches, ASA firewalls, Aruba APs, Polycom VC systems, retail network devices, CUCM, CUC, CUE, voice gateways, VoIP phones, Riverbed, and Radware load balancer.Key Achievements:Domain Migration: Executed Domain Migration to establish network connections among 26 APAC branch offices, utilizing MPLS and VPN technologies, encompassing 1700 PCs and 75 servers.Data Centre Relocation & Migration: Collaborated with a third-party vendor to relocate the network from a non-standard server room to the data center, ensuring a smooth migration of mission-critical servers.VoIP System Setup: Implemented the VoIP service by using CUCM with ISDN voice trunks in 26 APAC branch offices for 1400 users.Wifi System Setup: Implemented the Aruba Wireless System in 26 different APAC branch offices.Retail Network Upgrades: Upgraded 70+ retail stores in APAC regions to adhere to company network and security policies.Firewall Upgrade & Installation: Replaced legacy ASA firewalls and installed new ASA firewalls with IPS/IDS in 26 APAC branch offices.Network Security: Implemented network security enhancements, reducing security vulnerabilities by 30%, ensuring compliance with PCI standards and safeguarding sensitive data.

- Responsible for managing and supporting various aspects of the network, including data and voice network assignments, global MPLS network and acceleration, internet gateway and DMZ, firewall, remote access, and load balancer.- Streamlined network monitoring processes by implementing SolarWinds and PRTG as well as Wireshark packet capture, resulting in a 30% reduction in response time to network incidents and escalations, ensuring timely resolution and minimizing downtime.- Oversaw the follow-up of projects such as internet installations, router and Riverbed upgrades, and Cisco wireless installations.- Handled tickets, performed checks on major production systems, addressed network inquiries, and identified system faults.- Troubleshot issues related to slowness, routing, video quality for video conferencing, NeoVPN, and VPN W@Home.

- Proficient in configuring and maintaining multilayer switches and firewalls, with hands-on experience.- Knowledgeable in PIMv2, IGMP, OSPF, RSTP, VLAN, STP, Extended ACL, DHCP Snooping, VRRP, Port-security, and LACP.- Provided in-house support for Win03, firewall, anti-virus, and DNS administration, as well as routine backup tasks.- Managed and coordinated projects by collaborating with customers, vendors, and contractors.- Delivered pre-sale and post-sale services, including training, consultation, cost estimation for tenders, and customer service reporting.- Conducted network planning, created network diagrams, and performed site surveys.- Installed IPTV demo servers (Linux-based) and accompanied sales teams to demonstrate and explain IPTV systems, addressing technical issues for various telecommunications companies and hotels in the Far East Asia region.- Integrated, tested, evaluated, and troubleshot IPTV products (STB, Encoder, Video Server, DRM, Middleware) from different vendors.- Planned, deployed, installed, and maintained IPTV systems, providing services to various establishments, including hotels (Empire Hotel, Fullerton Hotel, FBH, JP Bonita Hotel), enterprises (Cisco, Singapore Media Distribution Authority, GIC, M2Bworld, Siam Shopping Center, CBBN), and telecom companies (Malaysia Telecom, Mei Ah Entertainment, Now.com, Smart Tone).

- Taught Mathematics to Secondary Four (Year 11) students.- Delivered IT and Mathematics education for Project Yi Jin students.- Maintained the school's website and participated in organizing extracurricular activities, such as Sports Day and Study Tours.- Created lesson plans tailored to individual student needs and learning styles, ensuring all students could achieve their full potential.