Jun Chen

CCIE-certified Network Engineer with 7+ years of experience in enterprise and data center networking, network security, solution delivery, and infrastructure operations. Hands-on background in network architecture, routing and switching, VPN, security, firewall, high-availability design, and practical Python-based network automation. Holds an M.S. in Cybersecurity from Canada.

Network System Engineer at Beijing Advanced Digital Technology Co., Ltd. (2019-04 – 2023-05)

• Led network support operations for large-scale BGP and OSPF enterprise infrastructure for a bank, scaled managed network services from 20 core data centre devices to 1,529 devices, created standards to improve service visibility, and supported coverage for roughly 2,000 network devices without additional headcount.
• Developed Python automation scripts for configuration generation, deployment, backup, and operational data collection, reducing repetitive manual configuration time from 8 hours to 30 minutes, and improving consistency across large-scale network changes.
• Redesigned and implemented a large-scale disaster recovery network for 800+ branches across 8 regions using L2TP, SCEP, and IPsec VPN; optimized implementation workflows to solve project delivery delays, reducing delivery time by 5 days for each region.
• Implemented data centre traffic mirroring infrastructure for retrospective packet analysis, reducing troubleshooting time for intermittent network issues by approximately 30% through improved packet-level visibility.
• Implemented a 130-AP headquarters Wi-Fi project across 15 floors using 4 WLCs, performed Mesh Access Point deployment and Wi-Fi optimization using survey tools, addressing hard-to-cable lobby connectivity and high-density space demand.

Network Engineer at Fujian Goldtech Information Technology Co., Ltd. (2016-07 – 2019-04)

• Contributed to the delivery of a dual-site, three-data-centre MPLS L3VPN WAN architecture for a 150+ branch financial institution, built a simulation environment to improve solution visibility, helping the client better understand the proposed solution.
• Led 2 regional data centre migrations, introduced QinQ to solve duplicate VLAN usage without additional change windows, reducing delivery time by 4 days, supporting cutover planning and zero-downtime production cutovers for 200+ branches.
• Implemented a Juniper firewall migration, translating 500 ACLs, 200 NAT rules, and 2,300 network objects; resolved post-change connectivity issues through packet analysis and cross-team coordination, avoiding production rollback.
• Implemented centralized Cisco ACS/ISE access control for approximately 1,500 network devices, enabling role-based login control, account-level authorization, and command-level authorization across provincial network environments.
• Supported daily network implementation and troubleshooting for data centre and branch environments, including routing, switching, firewall policy validation, configuration review, and post-change verification.

Master of Science in Cybersecurity – New York Institute of Technology – Vancouver Campus (2024)

Bachelor of Engineering in Computer Science and Technology – Fujian University of Technology (2016)