Airwallex

Staff Software Engineer, GTPN Platform

KR - Seoul. Posted a month ago

The role

You will architect distributed payment systems at global scale, designing and evolving core infrastructure. You will solve complex financial integrity problems and own the reliability and observability of the payment network.

What you will do

  • Architect distributed payment systems at global scale
  • Design and evolve core infrastructure across real-time local clearing, SWIFT, and proprietary treasury routing
  • Build idempotent, fault-tolerant systems for multi-currency reconciliation, asynchronous settlement, and compensation logic
  • Own the reliability and observability of the payment network
  • Define SLAs and design for graceful degradation during partner outages
  • Build real-time payment health monitoring
  • Use payment telemetry to optimise routing and identify bottlenecks
  • Set technical direction across a distributed engineering team by leading design reviews

Required qualifications

  • 7+ years’ experience building and operating production software, including distributed systems at scale
  • Strong system architecture skills with experience designing for fault tolerance, idempotency, asynchronous workflows, reconciliation, settlement, and failure recovery
  • Experience owning reliability for critical systems, including defining SLAs, designing graceful degradation, building observability, and leading incident response
  • Strong programming or scripting skills in a language such as Java, Kotlin, C++, Python or a similar language
  • A bachelor’s degree in Computer Science, Software Engineering, or a related field
  • Experience setting technical direction across multiple teams through design reviews, RFCs, and architecture decisions
  • Strong analytical skills, using operational and product data to guide technical decisions

Nice to have

  • Experience in fintech, payments, or other regulated financial domains
  • Deep experience with JVM-based ecosystems, including Java or Kotlin with Spring or Spring Boot
  • Prior experience leading teams responsible for high-availability, low-latency systems

About the company

Airwallex is an AI-native financial operating system for a real-time, intelligent economy. It provides financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.