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Airwallex company · OPEN ROLE

Airwallex

Staff Software Engineer, Risk

Singapore · Engineering · AI

Company
Supports businesses' cross-border payments, currency exchange, and card issuing on one platform.
Role
Leads the technical direction of a platform that detects fraudulent transactions in real time.

What you will do

We rewrote the responsibilities and qualifications in plain language instead of copying the original posting.

Responsibilities

  • Leads the technical direction for core risk services such as real-time detection, decision engines, and risk tooling, keeping them reliable, scalable, and cost-efficient.
  • Designs and evolves the architecture for distributed, event-driven risk systems.
  • Owns complex initiatives end to end, from design through implementation, rollout, and improvement.
  • Writes production code in Java and Spring Boot directly and leads design reviews and architecture discussions.
  • Works with data and ML teams to bring models and rules into production systems to improve detection.
  • Coaches and mentors other engineers to help them grow.

What you need

  • Has 10+ years of back-end engineering experience, including substantial time running complex distributed systems in production.
  • Has deep experience with risk, fraud, or fintech systems in high-stakes domains such as payments, banking, or trading.
  • Is strongly proficient in Java, including multi-threading and high-performance networked service design.
  • Has hands-on experience with event-driven architecture, distributed system design, caching, and resiliency patterns.
  • Can work with Spring or Spring Boot and build tools such as Gradle or Maven.
  • Holds a university degree in computer science or an adjacent field, or brings equivalent hands-on experience.

Good to have

  • Experience with risk-specific components such as rule engines, feature stores, model serving, or real-time stream processing is a plus.
  • Experience with machine learning in production, including model lifecycle and evaluation metrics, is a plus.
  • Experience with modern data and storage technologies such as Cassandra, Redis, Kafka, Flink, or Spark is a plus.
  • Working knowledge of Kotlin, Scala, Python, or Golang is a plus.
  • Cloud experience with Alibaba Cloud, AWS, or GCP is a plus.
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Checked 2026-10-19

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