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About Airwallex

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 250,000 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 2,300 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 you’re ready to do the most ambitious work of your career, join us.

Attributes We Value

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 you’re 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.

You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next.

About the team

The Liquidity Platform team powers the core infrastructure that enables Airwallex to manage funds efficiently, securely and intelligently across the globe.

Our platform ensures that money is always in the right place, at the right time, and used in the most effective way. We build systems for liquidity management, safeguarding, investment, and cash data management and analysis. These capabilities are critical to supporting Airwallex’s global operations, regulatory obligations and capital efficiency.

As Airwallex continues to scale globally, liquidity becomes one of the most important and complex infrastructure challenges. We need to forecast funding needs, optimize cash movements, support safeguarding compliance across jurisdictions, improve investment capabilities, and uncover new opportunities for capital optimization through high-quality data and analytics.

We are looking for talented and driven backend engineers to join the Liquidity Platform team and help us build one of the world’s most advanced and efficient liquidity management systems.

What you’ll do

You are an experienced backend engineer who is comfortable working in complex domains like financial markets, payments or other high-integrity distributed systems. You care deeply about correctness, simplicity and operability, and you’re happy to engage with product and non-technical stakeholders on trade-offs.

You’re pragmatic: you can balance ideal architectures with the realities of delivery, and you’re comfortable iterating on systems that are already in production.

This role is based in Singapore.

Responsibilities

• Design, build and own backend services for global liquidity management, safeguarding, investment workflows, and cash data management.

• Develop systems that ensure funds are available in the right entities, accounts and currencies to support global business operations efficiently and reliably.

• Build scalable platforms for liquidity forecasting, cash positioning, internal fund movement, funding optimisation, and operational decision-making.

• Contribute to Airwallex’s global safeguarding compliance infrastructure by building reliable systems that support regulatory reporting, segregation of funds, reconciliation and control processes.

• Design and enhance investment platform capabilities that help Airwallex manage surplus funds safely, efficiently and in line with internal policies and regulatory requirements.

• Build data pipelines, models and analytical capabilities to improve visibility into cash positions, liquidity usage, fund flows and optimisation opportunities.

• Work on complex distributed systems using modern backend architecture, including microservices, event-driven workflows, Kafka, gRPC, REST APIs, and SQL/NoSQL datastores.

• Implement robust controls for limits, approvals, reconciliation, data quality, monitoring and auditability to ensure our platform behaves predictably under stress and failure scenarios.

• Work end-to-end on features: from requirements clarification and solution design, to implementation, automated testing, deployment, observability and operational runbooks.

• Collaborate closely with Product, Treasury, Finance, Legal, Compliance, Risk, Data and other engineering teams to design APIs, data contracts and workflows that are reliable, observable and easy to operate.

• Instrument services with metrics, logs and tracing, and use these tools to support capacity planning, performance optimisation, incident response and continuous improvement.

• Participate in code reviews, technical design discussions and knowledge-sharing sessions; mentor less-experienced engineers where appropriate.

• Take part in our on-call rotation, supported by strong observability, runbooks and team processes, to ensure the Liquidity Platform remains reliable and highly available.

Who you are

We’re looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.

Minimum qualifications:

• 5+ years of experience building and operating backend systems in production.

• Strong programming experience in one or more JVM languages (e.g. Kotlin, Java) or a comparable backend stack, and a willingness to work primarily in the JVM ecosystem.

• Solid understanding of distributed systems fundamentals: concurrency, data consistency, idempotency, retries, backoff, and failure modes in networked services.

• Experience designing and working with REST and or gRPC APIs, and persistence layers using relational databases (e.g. PostgreSQL) and/or key-value stores.

• Proficiency with event-driven architectures and message brokers/streams (e.g. Kafka or similar).

• Strong focus on testing and quality: unit, integration and contract tests; familiarity with CI/CD pipelines.

• Good grasp of observability: metrics, logging, tracing and alerting, and how to use them to debug production issues.

• Clear written and verbal communication skills; comfortable working with cross functional partners in a fast-paced environment.

Preferred qualifications:

• Experience in fintech, payments, treasury, banking, liquidity management, safeguarding, investment platforms, regulatory reporting or financial data systems.

• Experience building systems that require strong auditability, reconciliation, controls, approval workflows or financial correctness.

• Experience working with data-intensive systems, cash flow analytics, forecasting, reporting or operational dashboards.

• Familiarity with financial operations concepts such as cash positioning, fund movement, bank account structures, entity-level liquidity, safeguarding, investment limits or cash optimisation.

• Experience designing platforms that support global operations across multiple markets, currencies, entities or regulatory environments.

#Singapore

Applicant Safety Policy: Fraud and Third-Party Recruiters

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 @airwallex.com email address. Please apply only through careers.airwallex.com 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.

Equal opportunity

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 don’t 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.