Assistant Manager, Network (Leading Organization)

KOS International Limited; Hong Kong; On-site; HKD 420,000 - 720,000; Full time

Job summary

KOS International Limited is seeking an Assistant Manager, Network Infrastructure in Hong Kong to design, enhance and operate an enterprise network. You will ensure reliable, secure connectivity while engaging with business stakeholders, users, vendors and contractors.

The role requires 6+ years IT experience with at least 3 years in networking, hands-on expertise in enterprise Wi‑Fi, routing, switching, and security, and strong communication skills in English and Cantonese.

Qualifications

• Bachelor's degree in Computer Science, Information Technology or related discipline.
• 6+ years IT experience, including 3+ years in networking.
• Hands-on design, planning, implementation and upgrades of network infrastructure.

Responsibilities

• Plan, design, implement and upgrade network infrastructure.
• Manage wired and wireless networks including Wi‑Fi, routers, switches and firewalls.
• Troubleshoot complex network issues and implement corrective measures.
• Monitor capacity, availability and performance; propose improvements.
• Translate technical requirements into business language for stakeholders.
• Coordinate with vendors, contractors and service providers on design, implementation and delivery.
• Maintain network policies, security controls and documentation.
• Support security monitoring and tools such as firewalls and SIEM.
• Participate in upgrades, integration and operational improvement projects.

Skills

Networking

Wi‑Fi

Security

Vendor coordination

English & Cantonese

Troubleshooting

Communication

Education

Bachelor's degree in Computer Science / IT

Tools

Cisco equipment

Network monitoring tools

Job description

Our client, a well‑known scalable organization in Hong Kong, is seeking an Assistant Manager, Network Infrastructure to support the design, enhancement and operation of its enterprise network.

This opportunity suits a technically strong network professional with excellent communication skills‑someone who can deliver reliable, secure connectivity while working confidently with business stakeholders, users, vendors and contractors.

Key Responsibilities

• Plan, design, implement and upgrade network infrastructure, ensuring reliability, security, scalability and alignment with business and operational requirements.
• Manage and optimise wired and wireless networks, including Wi‑Fi access points, routers, switches and firewalls.
• Troubleshoot complex network issues, identify root causes and implement effective corrective and preventive measures.
• Monitor network capacity, availability and performance, recommending improvements to support changing operational needs.
• Work closely with internal stakeholders and users to understand requirements and translate technical considerations into clear business language.
• Coordinate with vendors, contractors and service providers on solution design, implementation, issue resolution and project delivery.
• Establish and maintain network policies, security controls, technical standards and operational documentation.
• Support network security monitoring and the management of relevant tools, including firewalls and SIEM.
• Participate in infrastructure upgrades, system integration and operational improvement projects.

Requirements

• Degree in Computer Science, Information Technology or a related discipline.
• More than 6 years of relevant IT experience, including at least 3 years specialising in networking.
• In‑depth, hands‑on experience in network infrastructure design, planning, implementation and upgrades.
• Strong technical knowledge of enterprise Wi‑Fi, routing, switching, network protocols and network security.
• Practical experience configuring, administering and troubleshooting network equipment from major vendors.
• Proven experience supporting network infrastructure or delivering system integration and network enhancement projects.
• Excellent stakeholder engagement and interpersonal skills, with the ability to explain technical issues, risks and recommendations to non‑technical audiences.
• Strong vendor coordination skills and the ability to work effectively with internal teams and external parties.
• Good command of written and spoken English and Cantonese; Mandarin proficiency is an advantage.
• CCNA, CCNP or an equivalent network‑vendor certification.