Staff Software Engineer (GTPN Platform)

Location: Seoul, South Korea; working from the Seoul office five days a week

Company

Airwallex provides AI-native financial infrastructure for global payments, treasury, and financial products.

What you will do

• Architect and evolve distributed payment systems covering real-time local clearing, SWIFT, and proprietary treasury routing across 150+ countries.
• Build idempotent and fault-tolerant systems for multi-currency reconciliation, asynchronous settlement, compensation logic, and failure recovery.
• Own reliability and observability for the payment network by defining SLAs, designing graceful degradation, and monitoring payment health in real time.
• Use payment telemetry to optimize routing, identify bottlenecks, and measure settlement speed and conversion.
• Set technical direction across multiple teams through design reviews, RFCs, and architecture decisions.

Requirements

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

Nice to have

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

Culture & Benefits

• Work closely with engineering hubs across the US, Singapore, Hong Kong, and Shanghai.
• Collaborate with product managers, designers, and engineers across multiple countries and time zones.
• Own the roadmap and make technical decisions in an environment that values autonomy, accountability, quality, and first-principles thinking.