Yujia Tian

CCIE-certified Senior Network Engineer with 7+ years of experience supporting enterprise, banking, government, and data centre environments. Strong expertise in Cisco routing and switching, BGP/OSPF, F5 BIG-IP, network security, high availability, and complex L2/L3 troubleshooting. Experienced in network architecture, infrastructure transformation, production operations, and Python/Ansible automation in highly regulated environments.

SENIOR NETWORK ENGINEER / ARCHITECT at BNP Paribas (China) Limited (2022-07 – 2026-06)

Led enterprise core network architecture and a "two-location, three-centre" infrastructure transformation.

• Managed 400+ Cisco Nexus/Catalyst switches, routers and WLCs across enterprise and data centre environments.
• Engineered BGP, OSPF and multicast routing for large-scale production networks.
• Designed high-availability data centre networks using F5 BIG-IP LTM/DNS.
• Designed and operated HA Fortinet and Check Point firewall environments and site-to-site IPsec VPNs.
• Implemented Cisco ISE and 802.1X for enterprise network access control.
• Developed Python and Ansible automation for compliance checks, health checks and configuration changes.
• Managed critical production changes through ServiceNow ITSM and formal change-control processes.

SENIOR NETWORK ENGINEER at BNP Paribas Asia Pacific (Singapore) (2020-06 – 2022-07)

Supported enterprise network architecture and operations across APAC banking environments. (Contractor via Keyteo Consulting)

• Managed Cisco routing, switching, wireless, firewall and F5 infrastructure.
• Led F5 load-balancing infrastructure design, staging and migration for internet-facing services.
• Introduced Python and Ansible automation for compliance, vulnerability patching and firmware upgrades.
• Supported data centre migrations, internet gateway upgrades and network transformation projects.

NETWORK TECHNICAL LEADER at PCCW Solutions (Singapore) (2020-02 – 2020-06)

Led 24/7 network operations for mission-critical Singapore government infrastructure.

• Managed technical escalations, production incidents and SLA-driven service delivery.
• Deployed Python and Ansible automation to improve operational efficiency.
• Led technical training, change reviews and production governance.

LEAD NETWORK ENGINEER at NEC Asia Pacific (Singapore) (2016-07 – 2020-02)

Delivered enterprise network design, implementation, migration and production support. (Promoted from Project Management Assistant)

• Provided Tier-3 escalation for complex network incidents and P1 outages.
• Designed network infrastructure for private cloud environments using VMware NSX-T.
• Supported network integration for Kubernetes-based application platforms.
• Delivered POC testing, migration planning and production cutovers.

Master's Degree in Artificial Intelligence – Nanyang Technological University (2020 – 2022)

Bachelor's Degree in Electrical and Electronic Engineering – Nanyang Technological University (2012 – 2016)