Senior Network Engineer, Infrastructure

Location: Seoul, South Korea

Company

Airwallex provides a global payments and financial platform with integrated business accounts, payments, spend management, treasury, and embedded finance solutions.

What you will do

• Build the foundations of the corporate network and help shape the future infrastructure team.
• Design, deploy, and maintain highly available and secure LAN, WAN, VPN, and cloud networks across global data centres and cloud regions.
• Configure and troubleshoot routers, switches, firewalls, load balancers, cloud environments, and mixed-vendor networking hardware.
• Manage global connectivity across international leased lines and domestic internet connections.
• Respond to complex network incidents, coordinate resolution, and produce after-action reports.
• Collaborate with security, engineering, IT, product, and workplace teams while maintaining network documentation and operational procedures.

Requirements

• CCNP or JNCIP-level networking experience with strong knowledge of BGP and route filtering.
• Experience operating multi-vendor networks in a global company, including Juniper, Palo Alto, Cisco, or Aruba environments.
• Experience with Python or Bash scripting, declarative infrastructure tools such as Terraform, and Git CI/CD pipelines.
• Experience with AWS or GCP; experience with both platforms is preferred.
• Strong command-line configuration skills for networking hardware and platforms such as JunOS and IOS, plus solid documentation and change-control practices.
• Strong written and verbal English communication skills are required.

Nice to have

• Five or more years of relevant experience and a bachelor’s degree in information technology, computer science, or a related field.
• Linux administration, IPsec VPN, event-driven automation, and experience with additional cloud infrastructure such as Azure or Alibaba Cloud.
• Experience with SaaS systems, elastic connectivity providers, data centre providers, and fintech or other high-availability networks.

Culture & Benefits

• Work with a globally distributed infrastructure organization supporting developers and customers.
• Participate in a global on-call rotation for production and infrastructure issues.
• Provide flexible scheduling for pre-scheduled network upgrades and other business initiatives.
• Collaborate across a broad range of technical and business teams.