Kelvin LEUNG
Network Security Infra Support
Reading,United Kingdom
Summary
- Proficient Support Manager delivering encouragement and feedback to help employees be successful. Energetic professional with great poise. Well-trained in IP network, Information Security and Team Leading.
- 20+ years of network system Cloud and On-perm infrastructure support, 7 x 24 non-stop network operation and development experience.
- Managing a support team in vendor, government and fix/mobile telecom ISP sectors.
- Hand-on experience in Cisco, Juniper, Ericsson, Nokia, FortiNet, Checkpoint, F5, Extreme, NetScout, Gigamon etc carrier grade network and security platforms.
- Architect, design and integrate network security solutions such as two-tier firewall, IDS/IPS, anti-DDoS, Identity and Access management devices into production network.
Overview
24
24
years of professional experience
3
3
years of post-secondary education
3
3
Certifications
Work History
Network Engineer
ORI industries
London , UK
12.2021 - Current
- Manage network and security infra from 6 data centers spanning across UK, Germany, France, Spain and Netherlands hosting Kubernetes clusters.
- Support MPLS-VPN based data network across 5 geographical areas using Juniper MX/QFX platforms.
- Established security firewall and VPN polices of out-of-band network leverage on Juniper SRX and Cisco ASA remote access platforms.
- Monitored network and system healthiness by LibreNMS/Relics.
- Performed alerts/fault tickets troubleshooting and resolution.
Manager, Core Network Engineering
SmarTone Mobile Communications Limited
Hong Kong
01.2006 - 08.2021
- 15+ years of network system and security infrastructure support, 7 x 24 non-stop operation, monitoring and development experience at 3/4/5G mobile operator environment.
- Well versed with in-depth technical knowhow in Cisco, Juniper, Ericsson, Nokia, FortiGate, F5, etc carrier grade network platforms.
- Project and program managed vendors to build and maintain converged IP packet backbone network to carry mission-critical voice, packet, signal and control traffic.
- Liaised and negotiated with carriers and network service providers to trim recurring operating expenditure by 10%.
Analyst Programmer
Customs Department HKSAR Government
Hong Kong
06.2004 - 12.2005
- Oversaw installation of linux based DNS/Email application and communication encryption systems to meet requirements.
- Established multi-site multi-vendor network system infrastructure spanning across 10 remote offices and 7 border control checkpoints.
- Updated system security patches after thorough verification in test bed environment.
- Validated regular DR drill and resilience test with vendors and other functional departments.
- Documented procedures and business processes and shared information with appropriate stakeholders
- Identified and resolved problems through root cause analysis and research
Network Engineer
SmarTone-Vodafone
Hong Kong
01.1998 - 04.2004
- Support and maintain MPLS based Mobile Packet Backbone Network
- Setup Internet Edge On/off-net Peering and save the expensive IP transit cost by minimal 10%
- Ａrchitect GRX/IPX/Diameter Roaming network
- Liaise with content/CDN provider to establish On/off-net CDN Caching to improve customer online experience
- Designed and Acquired Internet DNS on-perm/cloud Infrastructure SaaS
- Integrated QoS enforement, security functions, etc into Gi Access Network
Education
Bachelor in Electronic Engineering - Electronic And Information Engineering
The Hong Kong Polytechnic University
Hung Hom Kowloon Hong Kong 10.1992 - 06.1995
Skills
Network System Infrastructure Support
undefinedCertification
CCIE- Routing & Switching
Timeline
Network Engineer
ORI industries
12.2021 - Current
CISSP
02-2007
CCIE- Routing & Switching
07-2006
CCNP
07-2006
Manager, Core Network Engineering
SmarTone Mobile Communications Limited
01.2006 - 08.2021
Analyst Programmer
Customs Department HKSAR Government
06.2004 - 12.2005
Network Engineer
SmarTone-Vodafone
01.1998 - 04.2004
Bachelor in Electronic Engineering - Electronic And Information Engineering
The Hong Kong Polytechnic University
10.1992 - 06.1995
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