Senior Network Engineer, Infrastructure (Fintech)

Location: Seoul, South Korea. Office: Units 1006, Partners Tower, 83 Gasan digital 1-ro, Geumcheon-gu, Seoul.

Company

Airwallex provides AI-native financial infrastructure and real-time payment solutions for businesses and financial product platforms.

What you will do

• Design, deploy, and maintain LAN, WAN, VPN, cloud, data-centre, and global connectivity networks.
• Configure and troubleshoot routers, switches, firewalls, load balancers, and cloud networking services.
• Manage mixed-vendor environments including Juniper, Cisco, Palo Alto, Aruba, and equivalent platforms.
• Use BGP, route filtering, subnetting, IPsec VPNs, and network security controls.
• Respond to incidents, lead troubleshooting, conduct post-incident reviews, and support upgrades and change activities.
• Partner with Security, Engineering, IT, and Workplace teams while maintaining diagrams, runbooks, and operational documentation.

Requirements

• 5+ years of hands-on network engineering experience in production environments.
• Strong routing and switching fundamentals at CCNA level or above.
• Experience with BGP, VPNs, network troubleshooting, and change management.
• Practical AWS or GCP networking experience; GCP is 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, plus strong written and verbal English communication skills.

Nice to have

• Experience with Terraform, Git, or CI/CD-based infrastructure automation.
• Background in banking, fintech, or other regulated, high-availability environments.
• CCNA, JNCIA, HCIA, or an equivalent networking certification.
• Stable employment history with sustained ownership of production systems.

Culture & Benefits

• Work with globally distributed infrastructure supporting financial solutions.
• Participate in a global on-call rotation.
• Collaborate across Security, Engineering, IT, and Workplace functions.
• Operate in a fast-moving environment emphasizing ownership, curiosity, and sound judgment.