Senior Backend Engineer, Stablecoin Platform

Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software we empower over 250000 businesses worldwide including Brex Rippling Navan Qantas SHEIN and many more with fully integrated solutions to manage everything from business accounts payments spend management and treasury to embedded finance at a global scale.

Proudly founded in Melbourne we have a team of over 2300 of the brightest and most innovative people in tech across 27 offices around the globe. Valued at US$11 billion and backed by world-leading investors including T. Rowe Price Visa Mastercard Robinhood Ventures Sequoia Salesforce Ventures DST Global and Lone Pine Capital Airwallex is leading the charge in building the global payments and financial platform of the future. If youre ready to do the most ambitious work of your career join us.

We hire successful builders with founder-like energy who want real impact accelerated learning and true ownership. You bring strong role-related expertise and sharp thinking and youre motivated by our mission and operating principles. You move fast with good judgment dig deep with curiosity and make decisions from first principles balancing speed and rigor.

Youre humble and collaborative; turn zerotoone ideas into real products and you get stuff done end-to-end. You use AI to work smarter and solve problems faster. Here youll tackle complex highvisibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you lets build whats next.

About the team
The Financial Markets team is responsible for Airwallexs core FX and liquidity infrastructure. Were now expanding into building the stablecoin infrastructure that will enable both customers and internal systems to buy hold send and settle with tokenised currency globally. This includes support for near-instant global payments on-chain liquidity and seamless conversion between fiat and stablecoin balances. Were building stablecoins into the core of Airwallexs infrastructure so they function as seamlessly as any fiat currency across our global platform.

Were seeking a skilled developer to take a leading role in advancing our initiatives. Someone who can both architect and build robust reliable systems and tackle the challenges of blockchain integration digital asset custody and global payments infrastructure.

What Youll Do

• Be part of a high-impact engineering team building stablecoin infrastructure from the ground up.

• Design and implement secure systems for key management transaction signing gas fee management and blockchain integration

• Own services that manage the full lifecycle of stablecoin transactions mint burn transfer reconciliation

• Build internal ledgering systems that track balances across multiple chains and token types

• Integrate stablecoin infrastructure into Airwallexs existing FX and payment systems enabling seamless conversion between any supported currency and stablecoins

• Write review and ship production code

• Collaborate with product infrastructure and compliance teams to deliver reliable and auditable services

Responsibilities

• A highly experienced engineer (5 years) with deep expertise in object-oriented design and production-grade software development including at least one strongly typed language (e.g. Kotlin Java C# C Rust); Python experience is useful but not sufficient on its own

• Proven experience building and integrating blockchain infrastructure (wallets transaction flows key management etc.) into larger financial systems

• Experienced in integrating new systems into legacy or distributed environments without introducing instability or regressions.

• Strong grasp of secure system design particularly around private key handling signing encryption and operational controls

• Able to quickly pick up unfamiliar tools or frameworks when needed and adjust to changing technical priorities.

• Clear communicator who works well across engineering product and non-technical teams

Experience in FX payments or financial infrastructure is useful but not required

#Singapore

To protect you from recruitment scams please be aware that Airwallex will not ask for bank details sensitive ID numbers (i.e. passport) or any form of payment during the application or interview process. All official communication will come from an @ email address. Please apply only through or our official LinkedIn page.

Airwallex does not accept unsolicited resumes from search firms/recruiters. Airwallex will not pay any fees to search firms/recruiters if a candidate is submitted by a search firm/recruiter unless an agreement has been entered into with respect to specific open position(s). Search firms/recruiters submitting resumes to Airwallex on an unsolicited basis shall be deemed to accept this condition regardless of any other provision to the contrary.

Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit qualifications competence and talent. We dont regard color religion race national origin sexual orientation ancestry citizenship sex marital or family status disability gender or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation please let us know.

Required Experience:

Senior IC