Liew Yong Han

MALAYSIA | SINGAPORE

Highly skilled network and security specialist with over 9 years of experience in designing, implementing, and maintaining secure computer networks and systems. Strong understanding of industry-standard security protocols and technologies, including firewall systems, IPS/IDS, and VPNs. Strong problem-solving and communication skills, with the ability to troubleshoot and resolve issues quickly and effectively. Committed to staying up-to-date with the latest security trends and best practices.

Experience

VP , Network Security Engineer - GIPS

United Overseas Bank Limited

• End to end accountability on user Lan security, firewall and network access control products. Seek outside in and bring forth new security technology, put in place governance, processes and training.

• Participate and contribute to network security architectural planning and design whilst engaging key project stakeholders for built and delivery.

• Lead or contribute to network security related projects and delivery end-to-end, from requirement gathering, design, build, execution and ensuring the successful hand over to operational support.

• Participate in service recovery to reduce system downtime and impact to internal users and external customer.

• Participate as SME L3 level support when required through escalations.

• Activities can include device management lifecycle, inventory documentation, budgeting, capacity and performance planning etc.

Apr 2023 - Present

IT Network Specialist

Amcor Flexibles Asia Pacific - Bemis Asia Pacific Sdn Bhd

• Be a key player of the regional IT Operations team to ensure stable and efficient network environment.

• Responsible for the implementation, configuration, management and monitoring of network infrastructure.

• Management of tickets assigned to Network Team in APAC,to ensure an effective level of support.

• Management of security rules applied on firewalls and web proxies.

• Management of the monitoring tools used to monitor the network equipment and servers.

• Diagnose and troubleshoot network related issues.

• Co-ordination of incidents and changes between Amcor and external partners

• Be a subject matter expert, providing recommendations in areas of networking solutions.

• Collaborate and work closely with other members of the IT Operations team.

• Contribute and participate in global, regional and local infrastructure projects.

• Adhere to Infrastructure Service Delivery methodologies and Enterprise Architecture global standards.

• Management of general network related documentation and knowledge base articles.

May 2022 - Mar 2023

Assistant Network Manager

RSD HOSPITAL SDN BHD

• Support company Network, Security & IP Telephony Infrastructure to ensure uptime.

• Troubleshooting, diagnosing, and resolving hardware,software, and other network and system problems.

• Replacing faulty network hardware components when required.

• Performing data backups when required.

• Conferring with network users about solving existing system problems.

• Monitoring network performance to determine if adjustments need to be made.

• Involve various projects to enhance network infrastructure.

• Hardware refreshment for EOL/S devices.

• Manage Hospital Information System (HIS) web hosting service with reverse proxy between LAN & DMZ zone.

• Network expansion for hospitals.

• Involve planning and budgeting process.

• Leading team to increase resource efficiency by planning of skill enhancement.

Network Engineer

Mar 2020 – Apr 2022














Dec 2018 – Feb 2020

Network Engineer (Resident Engineer)

Digital Venture Consulting SDN BHD

• Support client’s Network Infrastructure.

• Responsible to maintain, implement & support networks, including local area networks (LANs), wide area networks(WANs), the Internet, intranet and other data communications systems.

• Monitoring network devices performance and ensure system availability and reliability.

• Configuring and installing various network devices and services (e.g., routers, switches, VPN, QoS)

• Troubleshoot basic networking from level 1 to level 3 problems and interface with internal and external clients.

• Configure and deploy the telephony systems (Cisco).

• Improve processes and quality management.

• Manage network related projects.

• Create and maintain documentation as it relates to network configuration, process, and service records.

Nov 2017 - Dec 2018

Network Support Engineer

FUJITSU ASIA PTE LTD (Singapore)

• Support client’s Checkpoint Firewall, ASA Firewall and Juniper Firewall

• Handling changes request and incident request from user.

• Perform planning and firewall rule checking to ensure the firewall traffic is clear to allow.

• Make sure that it is followed as the policy guide set by the client.

• Prepare Review & Approval for the management with necessary material, background, and project detail to ensure the detail is getting approved before implantation.

• Verify action plan before implementation.

• To carry out tech review to make sure implementation is performed accordingly.

• Pre-implementation and post-implementation.

• Assist on the incident request on checking the firewall logs and provide the accurate data to client.

• Proper escalation to the correct parties for hardware incident case.

Jul 2017 - Nov 2017


Network Management , Specialist

DKSH Corporate Shared Services Network Center Sdn Bhd

• Co-ordinate, configure and install network configurations such as switches, routers and make sure the cables are connected properly.

• Maintaining network devices inventory, and ensuring all changes are recorded and updated.

• Monitor the networks and give support when issues occur.

• To carry out first level troubleshooting, log incident case and proper escalation.

• Assist in the managing resources of manpower and operation.

• Support superior in managing day-to-day operating expenditures against operating budgets to ensure efficient usage of resources.

• Perform monitoring and support on all connectivity (e.g.,WAN/LAN/network security/telecommunication/telephony systems) to ensure high availability and performance.

• Handle Global Networks (>20 Countries), 1700+ Network Devices.

• Adhere to network standards and policies for Group/incountry deployments.

Jun 2014 - Jun 2017

Education & Certification

Asia Pacific University (APU)

Network Computing | Honour Degree

CGPA: First Class Honour

March 2010 - March 2014

Cisco Certified Network Associate Routing and Switching (CCNA)

Check Point Experience (CPX 360) 2020 Hands on Labs

Skills

 Network (LAN & WAN)

• Routing (RIP, EIGRP, OSPF)

• L2/L3 Switching (STP, VTP)

• IPVPN / MPLS / Metro-E

• Cisco Router/ Switches

• Riverbed SteelConnect SDWAN

• VeloCloud SDWAN

• Fortinet SDWAN

• Extreme , Huawei Switches

 Security

• Cisco ASA/PIX Firewall

• Checkpoint Firewall

• FortiGate Firewall

• Palo Alto Firewall

• SonicWall Firewall

• Bluecoat Proxy

• Squid Proxy

• Trend Micro (IWSVA, DDAN, DDI)

• Azure MFA

• Cisco Secure ACS

• Cisco Identity Services Engine (ISE)

 Unified Communication

• Cisco Unified Communication Manager

• Cisco Unified Contact Center

• Video Conference (Polycom Cisco)

• Cisco IP Telephony

• GrandStream PABX

 Network Optimisation

• F5 – Link Controller

• F5 – Local Traffic Management

• F5 – Global Traffic Manager

• Riverbed WAN Optimizer

 Language

• English

• Chinese

• Malay


 Wireless

• Cisco Wireless Controller

• Aruba Wireless Controller

• Extreme Wireess Controller

• Cisco Meraki





 Monitoring and Management

• Solarwinds

• Cisco Prime Infrastructure

• Zabbix

• BaseN

• Entuity

• Optnet

• DNS (AWS)

• ThousandEyes

• DHCP Server (Linux/Windows)




 Soft Skill

• Vendor Management

• Customer Management

• Team Leading

• Incident, Problem and Change Management


 Others

• Citrix

• Windows / Linux Server

• VMware

• VMWare NSX





STRENGTHS

• Adaptable

• Time management skills

• Interpersonal and Communications

• Honest and trustworthy

• Responsible

• Willing to help, patient with people, willing to learn

• Reliable and Punctual

• Good attitude with others

ACHIEVEMENTS

  • Network Switches Refresh Deployment for organisation (2016-2023)
  • Apply hardening for Network & Security appliances (2018 – 2023)
  • MPLS migration to SDWAN technologies (2021 , 2022)
  • Merge new acquired site into the Network (2021)
  • Deploy Cisco DNA Center (2022)
  • FortiGate Firewall migration to SonicWall Firewall (2021)
  • Deploy F5 LoadBalander LTM/LC (2021,2023)
  • Deploy Trendmicro DDI & DDAN (2021)
  • Deploy Guest-WiFi (2018 , 2021)
  • Deploy Checkpoint VPN integration with Azure MFA (2020)
  • Deploy Citrix Project into company environment with MFA (2020)
  • Cisco ACS to Cisco ISE for all network devices (2020)
  • Deploy Cisco ISE hardware refreshment (2019)
  • Setup Solarwind as Monitoring tool (2016 , 2019 , 2022)
  • Site Relocation project (2016, 2019)
  • Implemented SD-WAN with WAN Optimizer to enhance network bandwidth and performance. (2018)
  • Setup 2Tier Firewall, to segregate traffic between internal, external and DMZ. (2018)
  • Dealing with design of network, data points & AP on new expansion. (2018 - 2021)
  • Internet Router Migration. (2018)
  • Setup Zabbix as monitoring tool (2017)
  • Link migration for branches (2016)
  • Setup Linux DHCP and Proxy servers (2016)
  • Proof of Concept on Huawei Switches Product (2023)
  • Proof of Concept on Netis Crossflow Product (2023)
  • Proof of Concept on IP Tel GrandStream Product (2022)
  • Proof of Concept on SOC Products (2022)
  • Proof of Concept on Forcepoint DLP Solution (2022)
  • Proof of Concept on SD-WAN (2018)
  • Proof of concept on Cisco Meraki product (2016)