Detail

Job Description

Provide L3 operational ownership for network security services across data center and enterprise environments
Lead resolution of complex, high-impact incidents, acting as the senior technical escalation point
Drive thorough root cause analysis and implement preventive actions
Support major incident response, including vendor escalation and technical coordination
Ensure services meet strict availability, resilience, and security standards
Execute and review high-risk changes with proper impact analysis and rollback planning
Identify operational, security, and configuration risks and drive remediation
Support internal audits, risk assessments, and regulatory reviews with technical evidence
Act as a senior escalation point for Cisco Data Center technologies (including ACI fabric design, policy modelling, fault isolation)
Work with Cisco Catalyst 29xx/3xxx/4900/6500/4500-X L2/L3 switch platforms
Handle Cisco Data Center switching (EVPN/VXLAN, automation, HA architectures)
Manage advanced routing and switching (BGP, OSPF, VRFs, segmentation, redundancy patterns)
Troubleshoot complex traffic flows across multi-tier, segmented environments
Provide operational support for Cisco ISE (NAC, authentication, authorization, policy enforcement)
Lead operational support for Fortinet stack: FortiGate firewalls (policy design, HA, VPN, advanced inspection), FortiManager (centralized policy governance and compliance enforcement), and FortiAnalyzer (logging, alerting, regulatory reporting, forensic investigations)
Provide APAC business hours support onsite
Participate in L3 on-call rotation, including nights and weekends
Support planned maintenance and major incident response

Job Requirements

Bachelor’s degree in Engineering, Computer Science, or equivalent experience (preferred)
8–10 years of overall experience
5+ years of strong hands-on experience in L3 network security operations
Strong hands-on experience with Cisco Data Center technologies (including ACI)
Proven ability to troubleshoot complex, multi-domain issues under pressure in customer-facing environments
Proven support experience in banking, financial services, or regulated environments
Good knowledge of ITIL Incident, Problem, and Change Management
Excellent troubleshooting skills in high-availability, mission-critical systems
Clear communication with engineers, vendors, and stakeholders
Advanced enterprise routing and switching (Catalyst and Nexus Switching)
Cisco Enterprise routers and switches (ISR and ASR)
FortiGate, FortiManager, FortiAnalyzer in production banking environments
H3C switches and Arista switches (nice to have)
ITIL Foundation or higher (preferred)
Cisco and/or Fortinet certifications (preferred)
Good command of both spoken and written English and Chinese

Tags for this job:

Industry

Human Resources Management
Job Function

Engineering / Tech>Telecommunication / Data Communication

Engineering / Tech>Others

Information Technology>Application Specialist - Network

Information Technology>Engineering / Hardware Design

Information Technology>Network & System
Location

Taikoo Shing
Salary

HK$ -
Employment Type

Full Time,Contract
Benefits

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