IT - Infrastructure (Network Security) – VP/AVP

Huatai International Financial Holdings Company Limited; Hong Kong; On-site; HKD 450,000 - 600,000; Full time

Job summary

Huatai International Financial Holdings Company Limited in Hong Kong is looking for a network security professional to manage and enhance security technologies across their infrastructure. Responsibilities include deploying firewalls, optimizing network performance, and conducting regular security audits.

The ideal candidate will have a Bachelor’s degree in a related field, 3–5 years of experience in network security, and proficiency in relevant tools such as Palo Alto and Fortinet. Fluent communication in Cantonese, Mandarin, and English is required.

Qualifications

• Minimum of 3–5 years of relevant experience in network security operation.
• Proven experience in firewall, VPN and network administration.
• Experience troubleshooting transport protocols (TCP/UDP).
• Fluent in written and speaking Cantonese, Mandarin and English.

Responsibilities

• Deploy, maintain, and enhance security technologies.
• Monitor network performance and security, troubleshooting issues.
• Conduct regular reviews and audits of firewall rules.
• Implement and maintain VPN solutions for secure access.

Skills

Network security operation

Troubleshooting

Firewall management

VPN administration

CCNA

CISSP

Problem-solving

Communication

Education

Bachelor’s degree in Computer Science

Tools

Fortinet

Palo Alto

Cisco

SolarWinds

Wireshark

Job description

Job Description

To grow & build‑up Huatai’s long‑term international strategic and business initiatives covering functional areas spanning the front‑to‑back offices by implementing & supporting the market leading‑edge technology platforms.

• Deploy, maintain, monitor and enhance security technologies such as Firewalls, IPS, Proxy, WAF, EDR, DDOS mitigation, Network Access Control.
• Responsible for the installation, monitoring, maintenance, support and optimization of network infrastructure.
• Conduct regular reviews and audits of firewall, proxy and WAF rules and configurations.
• Implement and maintain VPN solutions to ensure secure remote access for users.
• Monitor network performance and security, troubleshooting issues as they arise. Perform regular maintenance and upgrades to ensure network integrity.
• Perform vulnerability assessments and risk analysis to identify potential threats.
• Maintain accurate documentation of technical policies, procedures and incidents.
• Work with IT teams to ensure security measures are integrated into all aspects of the network.
• Provide technical guidance and mentorship to teammates, encouraging continuous improvement and knowledge sharing.
• Occasionally work in non‑office hours on changes, maintenance and/or incident handling.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Minimum of 3–5 years of relevant experience in network security operation and design, implementation projects, and troubleshooting.
• Professional qualification on network and security (e.g. CCNA, CCNP, CEH, CISSP, CISM, CCSP, or similar) is preferred.
• Proven experience in firewall, VPN and network administration.
• Experience in other network security solutions (e.g. Proxy, WAF, EDR, DDOS mitigation, SIEM).
• Experience troubleshooting transport protocols (TCP/UDP).
• Experience with switching, routing and network protocols (e.g. spanning‑tree, trunking, VPC, OSPF, BGP).
• Proficiency with networking and security products and solutions such as Fortinet, Checkpoint, Palo Alto, Zscaler, Sangfor, Imperva, Cisco, Huawei.
• Experience with network monitoring and management tools (e.g., SolarWinds, Wireshark).
• Good knowledge of automation skills e.g. Ansible, Python is a plus.
• Experience with cloud networking and security (AWS, Azure, Alibaba) is a plus.
• Familiar with ITIL IT Service Management framework.
• Fluent in written and speaking Cantonese, Mandarin and English.
• Strong analytical and problem‑solving skills.
• Strong team player with excellent communication and interpersonal skills.
• Self‑motivated and able to work under pressure and independently.