Senior Network Engineer, Infrastructure

About the role

Airwallex, the AI-native financial operating system used by more than 675,000 businesses, is hiring a Senior Network Engineer for its infrastructure team. The team keeps the globally distributed platform reliable, secure and available, and this role owns the network foundations that support engineers, customers and financial solutions. The position is based in Seoul.

Key responsibilities

• Design, deploy and maintain LAN, WAN, VPN and cloud networks supporting the globally distributed platform.
• Operate global connectivity, including leased lines, internet connections and data-centre networks.
• Configure and troubleshoot routers, switches, firewalls, load balancers and cloud networking services across mixed-vendor environments.
• Lead network incident response, troubleshooting, post-incident reviews, upgrades and change activities with minimal business disruption.
• Partner with Security, Engineering, IT and Workplace teams, and maintain diagrams, documentation, runbooks and operational procedures.
• Participate in a global on-call rotation.

Required profile

• 5+ years of hands-on network engineering experience in a production environment.
• Strong routing and switching fundamentals, equivalent to CCNA level or above.
• Stable employment history with sustained ownership of production systems.
• Preferred: experience in banking, fintech or other regulated, high-availability environments; a relevant networking certification such as CCNA, JNCIA or HCIA.

Required skills

• BGP, route filtering, subnetting, IPsec VPNs, network troubleshooting and change management.
• Practical experience with GCP or AWS networking; GCP experience preferred.
• Experience with at least two networking vendors, such as Juniper, Cisco, Palo Alto, Aruba or Arista.
• Working knowledge of Linux and scripting with Python or Bash.
• Preferred: Terraform, Git or CI/CD-based infrastructure automation.
• Strong written and verbal English.