Network Admin (confi)

KOS International Holdings; Tung Lo Wan; On-site; HKD 300,000 - 540,000; Full time

Job summary

KOS International Holdings seeks a Network Admin Engineer to support its enterprise network and unified communications across APAC. This hands-on role focuses on troubleshooting, reliability and regional user support.

You will manage Cisco CUCM and traditional networking gear, build robust connectivity and contribute to security and disaster-recovery initiatives with global IT teams. Fluency in English and Cantonese/Mandarin is preferred.

Qualifications

• Degree in Information Technology, Computer Science or related discipline.
• 3+ years hands-on experience supporting enterprise networks in multi-site environments.
• CCNA or CCNP certification and CUCM administration experience.

Responsibilities

• Provide day-to-day network administration and technical support across APAC locations.
• Troubleshoot routing, switching, wireless, VPN, firewall and voice issues; identify root causes and implement solutions.
• Administer and support Cisco Unified Communications Manager; resolve telephony and connectivity issues.
• Install, configure and maintain Cisco enterprise networking equipment and related infrastructure.
• Support LAN/WAN, internet circuits, MPLS, remote access and cloud connectivity.
• Monitor network performance, availability and capacity; address issues proactively.
• Maintain firewall policies, segmentation and security controls; follow internal standards.
• Collaborate with regional users, global IT teams and external vendors on incidents and changes.
• Maintain network documentation and change-management procedures.
• Participate in firmware upgrades, vulnerability remediation and disaster-recovery testing.

Skills

Network troubleshooting

Cisco networking

English communication

Team collaboration

Multi-site support

Education

Bachelor's degree in IT/CS

Tools

CUCM

Cisco Catalyst/Nexus/Meraki

VPN

Firewall

Job description

Overview

Our client is an international organisation seeking a Network Admin Engineer to support its enterprise network and unified communications infrastructure across APAC. This is a hands-on role focused on troubleshooting, operational reliability and regional user support.

Responsibilities

• Provide day-to-day network administration and technical support across APAC locations, ensuring reliable connectivity and timely incident resolution.
• Troubleshoot complex routing, switching, wireless, firewall, VPN and voice-related issues, identifying root causes and implementing effective solutions.
• Administer and support Cisco Unified Communications Manager, resolving telephony and call-connectivity issues.
• Install, configure and maintain Cisco enterprise networking equipment and related infrastructure.
• Support LAN/WAN, internet circuits, MPLS, remote access and cloud connectivity.
• Monitor network performance, availability and capacity, proactively addressing issues before they affect business operations.
• Maintain firewall policies, network segmentation and security controls in line with internal standards.
• Work closely with regional users, global IT teams and external vendors on incidents, infrastructure changes and improvement projects.
• Maintain network documentation, configuration records and change-management procedures.
• Participate in firmware upgrades, vulnerability remediation, disaster-recovery testing and after-hours maintenance or incident support when required.

Qualifications

• Degree in Information Technology, Computer Science or a related discipline, or equivalent professional experience.
• At least 3 years of hands-on experience supporting enterprise networks in a multi-site environment.
• CCNA or CCNP certification and hands-on administration and troubleshooting experience with CUCM are mandatory.
• Strong troubleshooting skills across Cisco routing and switching, wireless networks, VPNs, firewalls and IP connectivity.
• Good command of spoken and written English, with the ability to communicate effectively with regional users and global IT colleagues.
• Solid understanding of L2-3 networking, VLANs, OSPF, BGP, STP, HSRP/VRRP, TCP/IP, DNS, DHCP and NAT.
• Experience with Cisco Catalyst, Nexus, Meraki or equivalent enterprise networking platforms.
• Good command of spoken and written English and Chinese (Cantonese/Mandarin).