Senior Network & Security Architect

CL Technical Services Ltd.; Hong Kong; On-site; HKD 600,000 - 1,200,000; Full time

Job summary

CL Technical Services Ltd. in Hong Kong is seeking an experienced IT infrastructure professional to assess and evolve a complex network and system landscape.

You will design replacement roadmaps and prepare SOWs, while evaluating vendor proposals and coordinating with contractors to ensure security compliance. The role requires hands-on experience with Windows and Linux servers, network and change management, and IT security risk assessment.

Qualifications

• Higher Diploma or above in Computer Science or related subjects.
• CCNP and/or Cisco Certified Internetwork expertise.
• CCIE or equivalent certification.
• Strong knowledge and hands-on experience in network and infrastructure administration.
• Experience in Windows & Linux servers, LAN/WAN networking, device management and change management.
• Experience in vendor management.
• Experience in IT security risk assessment & audit.

Responsibilities

• Assess existing network and system infrastructure, identify risks, limitations, and modernization opportunities.
• Develop infrastructure replacement and enhancement roadmaps aligned with security and operational requirements.
• Prepare technical specifications, Statements of Work (SOW), and procurement documentation.
• Evaluate vendor proposals and coordinate with contractors to ensure technical and security compliance.
• Oversee the installation, configuration, testing, and deployment of new network and system infrastructure.
• Manage migration activities, including data transfer, system configuration updates, and cutover execution.

Skills

Network infra

Infrastructure management

Vendor management

Security risk assessment

Change management

Windows servers

Linux servers

CCNP/CCIE cert

Education

Higher Diploma or above in Computer Science or related subjects

Job description

CL Technical Services Ltd. in Hong Kong is seeking an experienced IT infrastructure professional to assess and evolve a complex network and system landscape.

You will design replacement roadmaps and prepare SOWs, while evaluating vendor proposals and coordinating with contractors to ensure security compliance. The role requires hands-on experience with Windows and Linux servers, network and change management, and IT security risk assessment.