Software Engineer II, Quality

About the team Risk Platform builds the decisioning infrastructure that sits between Airwallex and every dollar that moves through it, protecting 150,000+ businesses moving over US$260 billion a year across 150+ countries and 60+ currencies, and deciding, often in milliseconds, whether a new signup is real, a payment is safe, or a login is who they claim to be.

The hard part is that fraud evolves fast, and every decision carries a two-sided cost: miss an attack and money is lost, over-block and a legitimate business can't get paid.

We build this with streaming pipelines processing billions of events a day, graph databases exposing coordinated fraud rings, ML models scoring every transaction, and LLM agents that triage alerts.

You don't need a fintech background, just an appetite for adversarial systems problems where the scoreboard is measured in dollars. If you want to help scale one of the world's fastest-growing financial platforms safely, this is the team.

About the Role

As the first Quality Engineer on the Risk Platform team, you'll help the whole risk team decide and define what quality means for risk-critical systems — the standards, practices, and quality gates everyone builds around. You're an engineer first: you build the automation, tooling, and infrastructure that let us ship changes to these systems quickly and safely.

Responsibilities

Design, build, and maintain end-to-end and regression automation across the risk decisioning flows — onboarding (KYC/KYB, merchant risk), transaction scoring, and screening — and wire the suites into CI/CD so regressions are caught before release.

Establish stable, reproducible test data and isolated environments, including realistic fraud, screening, and jurisdiction scenarios, so automation stays deterministic and trustworthy.

Introduce and own contract testing between the Risk Platform and its upstream and downstream services to catch integration breakages early. Build jurisdiction-specific coverage that validates reg