Senior Network & Security Infrastructure Engineer
Role: Onsite engineer supporting enterprise network infrastructure and security across multiple sites, working with trading support and development teams to ensure performance, availability, and security.
Key Responsibilities:
- Support and troubleshoot enterprise networking across Cisco routers/switches.
- Administer FortiGate firewalls (policies/profiles, routing, VPNs—especially IPSec, VDOMs/HA).
- Use FortiManager/FortiAnalyzer for centralized config management, logging, and reporting.
- Perform advanced IP/network troubleshooting using Wireshark/tcpdump and protocol diagnostics.
- Maintain network security compliance and accurate documentation/diagrams.
LOOKING FOR:
- Min. 5+ years hands-on experience with enterprise routing/switching and firewall environments.
- Strong FortiGate experience (including VDOMs, IPSec, and HA).
- Strong IP networking fundamentals (TCP/UDP, packet flow analysis, NAT and routing concepts like BGP/static routing/redistribution).
- Strong troubleshooting skills (Wireshark/tcpdump).
- Proficiency with at least one OS: Linux or Windows
- Excellent communications skills in English. PLUS, if you can speak Cantonese / Mandarin.
