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Senior Backend Engineer, Stablecoin Platform

Airwallex· Engineering
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SG - SingaporeFull-timePosted 2mo ago

About the role

Senior backend engineer responsible for building stablecoin infrastructure, including key management, transaction flows, gas fee management, blockchain integration, and integration with FX and payment systems.

Responsibilities

  • 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 Airwallex’s existing FX and payment systems to enable seamless conversion between supported currencies and stablecoins.
  • Write, review, and ship production code while partnering with Product, Infrastructure, and Compliance to deliver reliable and auditable services.

Qualifications

  • Five or more years of experience as a software engineer, with 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. Python experience is useful but isn’t sufficient on its own.
  • 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.

Skills

Required:Object-oriented designStrongly typed languagesBlockchain infrastructureSecurity and cryptography
Last updated Oct 15, 2026. Interested? Apply on the company site.
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