Senior Software Engineer, Ecosystem

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.

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.

Join our Ecosystem team, a cross-functional group of engineers and product partners building the platforms and integrations that connect Airwallex with the software our customers rely on every day. We own strategic accounting, marketplace, payment plugins, and open‑banking integrations, as well as the infrastructure that powers our public APIs that enabling third-party partners to build on top of. You’ll work closely with backend, product, design, and go‑to‑market teams to ship secure, reliable experiences that simplify financial operations for businesses of all sizes and unlock new use cases on top of the Airwallex business account.

As a member of our team, you will have the opportunity to work on cutting-edge technologies and contribute to the growth and success of our company. You will 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 (accounting, HR, ERP, marketplace, etc.), and develop scalable solutions to support our ecosystem strategy.

You will also have the chance to work closely with product managers and designers to deliver innovative features and functionalities, as well as contribute to the technical roadmap and provide input on new technologies and best practices.

This role is based in Singapore.

• Platform Architecture & Strategy: Lead the high-level design and long-term technical roadmap for the App Marketplace or Extension Framework.

• Extensibility Frameworks: Design and implement the core SDKs, webhooks, and UI-extension patterns that allow third-party developers to embed their functionality directly into the Airwallex platform.

• Technical Excellence: Establish and enforce rigorous internal coding standards, observability patterns, and security protocols for the entire team.

• Developer Experience (DX): Champion the needs of external developers by building world-class documentation infrastructure, sandboxes, and tooling.

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

• Bachelor's degree in Computer Science, Software Engineering or a related field

• 5+ years of experience in developing Internet applications, large financial systems, or e-commerce platforms

• Proficient in coding or scripting languages (Java/Kotlin/C++/Python, etc.)

• Deep familiarity with the standard library, idiomatic usage, and best practices of your primary programming languages.

• Ecosystem Experience: Direct experience building or maintaining a public-facing developer platform, app marketplace, or extension framework.

• Architectural Patterns: Deep expertise in Domain-Driven Design (DDD) to manage complex business logic and microservice boundaries.

• Infrastructure: Hands-on experience with cloud-native tech stacks, including Docker, Kubernetes, and advanced observability tools.

• Emerging Tech: Experience integrating AI/LLM models to automate integration workflows or enhance developer tooling.

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.

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.