Network Specialist (Banking, Contract Role)

Osmium Consulting Group Limited; Hong Kong Island; On-site; HKD 280,000 - 420,000; Full time

Job summary

Osmium Consulting Group Limited is seeking a Network Specialist for a banking-focused contract role in Hong Kong. The candidate will provide daily support for network operations and maintenance across LAN/WAN, wireless networks, and Internet services.

The role covers configuring firewalls, deploying Site-to-Site IPsec VPNs, and ensuring high availability using load balancers and Nginx. Collaboration with development teams across environments is essential, with strong troubleshooting skills a

Qualifications

• Higher Certificate or Diploma in Computer Science is welcome
• Minimum 5 years of experience in networking infrastructure support
• Professional qualifications are preferred (not mandatory)

Responsibilities

• Provide daily support for network operations and maintenance across LAN/WAN and wireless networks
• Configure and maintain next-generation firewalls and optimize policies for banking assets
• Deploy and manage enterprise load balancers and Nginx for performance and high availability
• Design and manage enterprise Wi‑Fi networks including mobility controllers and NAC
• Partner with application teams to design network environments across development, testing and production
• Provide high-tier troubleshooting to resolve complex network incidents
• Assist in defining network and security policies and baselines
• Utilize knowledge of EIGRP and OSPF technologies
• Provide network support for overseas branches

Skills

EIGRP

OSPF

VPNs

Firewalls

LAN/WAN

Wi-Fi networks

NAC

Troubleshooting

Load balancers

Education

Higher Certificate or Diploma in Computer Science

Tools

Nginx

IPsec VPNs

Mobility controllers

WLAN controllers

Job description

Network Specialist (Banking, Contract Role)

Provide daily support for network operations and maintenance, covering fixed networks (LAN/WAN), wireless connectivity, and Internet services.

Configure and maintain next-generation firewalls to protect banking assets, including policy optimization and deploying Site-to-Site IPsec VPNs.

Deploy and manage enterprise load balancers and Nginx (including virtual servers, pools, and custom iRules or traffic policies) to ensure performance and high availability of critical banking applications.

Design, deploy, and manage enterprise Wi-Fi networks, including mobility controllers, access points, management platforms, and Network Access Control (NAC).

Partner with application development teams to design and provision network environments across development, testing, and production phases.

Provide high-tier technical troubleshooting to rapidly resolve complex network and connectivity incidents.

Assist in defining network and security-related policies and baselines.

Utilize sound knowledge in EIGRP and OSPF technologies.

Provide network support for overseas branches.

Requirements

Higher Certificate or Diploma in Computer Science is welcome;

Minimum 5 years of experience in networking infrastructure support

Professional qualifications are preferred (not mandatory).