Software Engineer II, Liquidity Platform

SG - Singapore · 2+ years experience · Full-time · Onsite · Posted Sep 24, 2026

At a glance

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, 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.

The Liquidity Platform team builds core infrastructure to manage funds efficiently, securely, and intelligently across the globe.
Engineers in this role design and own backend services for liquidity management, safeguarding, investment workflows, and cash data analysis.
The role involves building scalable systems to support global operations, regulatory compliance, and capital optimization.

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.
Build scalable platforms for liquidity forecasting, cash positioning, internal fund movement, and funding optimisation.
Contribute to global safeguarding compliance infrastructure including regulatory reporting and reconciliation.
Design and enhance investment platform capabilities for managing surplus funds.
Build data pipelines, models and analytical capabilities for cash position visibility.
Work on complex distributed systems using microservices, event-driven workflows, Kafka, gRPC, REST APIs, and SQL/NoSQL datastores.
Implement robust controls for limits, approvals, reconciliation, data quality, and auditability.
Work end-to-end on features from requirements and design to implementation, testing, deployment, and observability.
Participate in on-call rotations to ensure platform reliability and high availability.

2+ 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.
Solid understanding of distributed systems fundamentals including concurrency, data consistency, and idempotency.
Experience designing and working with REST and/or gRPC APIs.
Experience with 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).
Strong focus on testing and quality including unit, integration, and contract tests.
Familiarity with CI/CD pipelines.
Good grasp of observability including metrics, logging, tracing, and alerting.
Clear written and verbal communication skills.

Experience in fintech, payments, treasury, banking, liquidity management, safeguarding, or investment platforms.
Experience building systems requiring strong auditability, reconciliation, controls, or financial correctness.
Experience working with data-intensive systems, cash flow analytics, forecasting, or operational dashboards.
Familiarity with financial operations concepts such as cash positioning, fund movement, or bank account structures.
Experience designing platforms that support global operations across multiple markets, currencies, or regulatory environments.