Software Engineer, Ecosystem

SG - Singapore · 2+ years experience · Full-time · Onsite · Posted Sep 22, 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 Ecosystem team builds platforms and integrations that connect Airwallex with third-party software used by customers.
The role involves owning strategic accounting, marketplace, payment plugins, and open-banking integrations, as well as the infrastructure for public APIs.

Lead the high-level design and long-term technical roadmap for the App Marketplace or Extension Framework.
Design and implement core SDKs, webhooks, and UI-extension patterns for third-party developers.
Establish and enforce internal coding standards, observability patterns, and security protocols.
Champion developer experience by building documentation infrastructure, sandboxes, and tooling.
Collaborate with cross-functional teams to design, develop, and maintain the ecosystem platform.
Build and integrate APIs to connect with external financial institutions and third-party platforms.
Develop scalable solutions to support the ecosystem strategy.
Work with product managers and designers to deliver innovative features.
Contribute to the technical roadmap and provide input on new technologies and best practices.

Bachelor's degree in Computer Science, Software Engineering or a related field.
2+ years of experience in developing Internet applications, large financial systems, or e-commerce platforms.
Proficiency in coding or scripting languages such as Java, Kotlin, C++, or Python.
Deep familiarity with the standard library, idiomatic usage, and best practices of primary programming languages.
Direct experience building or maintaining a public-facing developer platform, app marketplace, or extension framework.

Deep expertise in Domain-Driven Design (DDD) to manage complex business logic and microservice boundaries.
Hands-on experience with cloud-native tech stacks, including Docker and Kubernetes.
Experience with advanced observability tools.
Experience integrating AI/LLM models to automate integration workflows or enhance developer tooling.