Airwallex

Staff Backend Engineer, Issuing Platform

Airwallex
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9 months ago
Singapore, SingaporeStaff+

Responsibilities

  • Design, build, and operate highly reliable and scalable systems powering real-time card transactions.
  • Own complex problem spaces end to end, from system design and production rollout through long-term evolution.
  • Lead the design of distributed, event-driven systems with strong correctness, performance, and resiliency guarantees.
  • Drive architectural improvements that reduce complexity, improve operability, and support future product growth.
  • Set a high bar for code quality, testing, observability, and operational readiness.
  • Identify and remove technical bottlenecks that slow teams or create systemic risk.
  • Influence technical direction across multiple teams through design reviews, RFCs, and hands-on collaboration.
  • Mentor senior engineers and shape engineering practices without formal people-management responsibilities.
  • Evolve core infrastructure and shared platform capabilities to improve developer productivity and system reliability.
  • Evaluate technologies and guide adoption where they provide clear value.

Requirements

  • 8+ years of professional software engineering experience with sustained senior- or staff-level individual-contributor impact.
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field.
  • Strong backend development proficiency in Java, Kotlin, Go, or Python.
  • Deep experience designing and delivering large-scale distributed systems in production.
  • Strong computer science fundamentals and understanding of object-oriented design.
  • Hands-on experience with event-driven and streaming architectures such as Kafka.
  • Experience designing and operating RESTful APIs at scale.
  • Experience with domain-driven design and event-driven architectures.
  • Cloud experience with GCP or AWS, including Docker and Kubernetes.
  • Familiarity with Splunk, Grafana, Prometheus, or similar observability tooling.
  • Ability to mentor engineers and influence technical direction through design and execution.
  • Fintech, payments, or other regulated financial-domain experience is preferred.
  • Deep JVM ecosystem experience, including Java or Kotlin with Spring or Spring Boot, is preferred.

Categories

Airwallex

About Airwallex

1,001-5,000 employees

Airwallex builds a global payments and financial operations platform for businesses, offering payment acceptance, multi-currency accounts, FX and transfers, card issuing, treasury and spend management via APIs and web apps. It monetizes through transaction and foreign-exchange fees and related account services. Founded in Melbourne in 2015 and privately held, the company serves customers worldwide, with notable users including Brex, Canva and Qantas.

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