Network Maintenance Engineer (West)

Combuilder Pte Ltd; Hong Kong; On-site; HKD 180,000 - 280,000; Full time

Job summary

Combuilder Pte Ltd is seeking a Network Operations professional to perform routine operation, monitoring, and preventive maintenance of network infrastructure, including switches, routers, firewalls, wireless equipment, and network management systems.

You will monitor network performance, availability, and capacity to ensure stable and reliable service delivery, analyze logs, and resolve incidents with adherence to SLAs. Travel to West Hong Kong sites will be required.

Qualifications

• Diploma or Degree in Computer Engineering, IT, CS, or Telecommunications.
• 1+ year of experience in network operation, maintenance and support.
• Strong knowledge of TCP/IP, Routing & Switching, VLAN, Firewall, VPN, Wireless Networks, and Network Security.
• Hands-on troubleshooting, incident management and root cause analysis.
• Experience with network monitoring tools, log analysis and performance monitoring.
• Experience with firmware upgrades, patch management and change implementation in production.
• AWS Cloud networking experience (VPC, Route Tables, Security Groups, NATs/Direct Connect) is a plus.
• Certs like CCNA, CCNP or AWS certifications are advantageous.

Responsibilities

• Perform routine operation, monitoring, and preventive maintenance of network infrastructure.
• Monitor network performance, availability, and capacity to ensure reliable service.
• Analyze network logs to identify abnormalities and perform root cause analysis.
• Respond to incidents and resolve disruptions per SLAs.
• Plan and execute firmware upgrades, software patches, and security updates.
• Support change management, including impact assessment and rollback planning.
• Maintain network documentation, configuration records, and incident logs.
• Coordinate with vendors and internal teams for troubleshooting and resolution.
• Support and maintain AWS cloud networking and on-prem/cloud connectivity.
• Participate in on-call and after-hours maintenance when required.

Skills

TCP/IP

Routing & Switching

VLAN

Firewall

VPN

Wireless Networks

Network Security

Education

Diploma or Degree in Computer Engineering / IT / CS / Telecommunications

Tools

AWS Cloud Networking

VPC

Route Tables

Security Groups

Network Monitoring Tools

Job description

Responsibilities:

• Perform routine operation, monitoring, and preventive maintenance of network infrastructure, including switches, routers, firewalls, wireless equipment, and network management systems.
• Monitor network performance, availability, and capacity to ensure stable and reliable service delivery.
• Analyze network logs to identify abnormalities, diagnose issues, and perform root cause analysis.
• Respond to and resolve network incidents, service disruptions, and performance degradation in accordance with established SLAs.
• Plan, coordinate, and execute firmware upgrades, software patching, and security updates for network devices.
• Support change management activities, including impact assessment, implementation, validation, and rollback planning.
• Maintain network documentation, configuration records, maintenance reports, and incident logs.
• Coordinate with vendors, stakeholders, and internal support teams for technical troubleshooting and issue resolution.
• Support and maintain AWS cloud networking infrastructure and connectivity between on-premises and cloud environments.
• Participate in on-call support and scheduled maintenance activities outside normal working hours when required.

Requirements

• Diploma or Degree in Computer Engineering, Information Technology, Computer Science, Telecommunications, or a related discipline.
• Minimum 1 years of experience in network operation, maintenance, and support.
• Strong knowledge of TCP/IP, Routing & Switching, VLAN, Firewall, VPN, Wireless Networks, and Network Security.
• Hands-on experience in network troubleshooting, incident management, and root cause analysis.
• Experience with network monitoring tools, log analysis, and performance monitoring.
• Experience in firmware upgrades, software patch management, and network change implementation in production environments.
• Preferred experience in AWS Cloud networking services, including VPC, Route Tables, Security Groups, Network ACLs, Transit Gateway, Site-to-Site VPN, Direct Connect, and hybrid cloud networking.
• Good analytical, troubleshooting, and communication skills.
• Ability to work independently and effectively coordinate with multiple stakeholders.
• Relevant certifications such as CCNA, CCNP, AWS Certified Advanced Networking, AWS Solutions Architect Associate, or equivalent will be an added advantage.

Work Location: West, to travel to site when required