Airwallex

Senior Backend Engineer, Stablecoin Platform

SG - Singapore. Posted 3 months ago

The role

You will build stablecoin infrastructure from the ground up to enable global tokenised currency transactions. This involves designing secure systems for key management, transaction signing, and blockchain integration.

What you will do

  • Design and implement secure systems for key management, transaction signing, gas fee management, and blockchain integration.
  • Own services across the full lifecycle of stablecoin transactions, including minting, burning, transfers, and reconciliation.
  • Build internal ledgering systems that track balances across multiple chains and token types.
  • Integrate stablecoin infrastructure with existing FX and payment systems.
  • Write, review, and ship production code.
  • Partner with Product, Infrastructure, and Compliance to deliver reliable and auditable services.

Required qualifications

  • Five or more years of experience as a software engineer.
  • Deep expertise in object-oriented design and production-grade software development.
  • Strong experience with at least one strongly typed language, such as Kotlin, Java, C#, C++, or Rust.
  • Proven experience building and integrating blockchain infrastructure, such as wallets, transaction flows, or key management, into larger financial systems.
  • Experience integrating new systems into legacy or distributed environments without introducing instability or regressions.
  • Strong understanding of secure system design, particularly private key handling, signing, encryption, and operational controls.
  • Ability to quickly pick up unfamiliar tools or frameworks and adjust to changing technical priorities.
  • Clear communication skills and the ability to work effectively across engineering, product, and non-technical teams.

Nice to have

  • Experience in FX, payments, or financial infrastructure.

About the company

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