Software Engineer Intern (Jan to Jun 2027)

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, 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 https://www.airwallex.com/us/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. WHAT YOU'LL DO: Project scope/overview: The intern will design, develop, and deploy production-ready capabilities for Airwallex’s Spend Cards and Issuing platform. The project may span card lifecycle management, spend controls, transaction visibility, APIs, or customer-facing card experiences.. Detailed Outline: Technical tasks/deliverables: 1. Technical design scoping: Create workflow diagrams, identify dependencies, expected inputs and outputs, and define success criteria (e.g., latency, accuracy, cost). 2. Feature development: Build and integrate production-ready Cards and Issuing capabilities across backend, APIs, and frontend where needed. 3. Testing & observability: Add automated testing and set up observability dashboards with logging, metrics, and alerts to monitor performance and reliability. 4. Deployment: Deploy the completed capability to production and validate it with real users. Project Milestones: 1. Technical design sign-off: Finalise workflow diagrams, success criteria, and technical design documentation. 2. MVP development: Build Cards or Issuing capability and validate key flows. 3. Production readiness: Complete testing, observability, and integration requirements. 4. Deployment and showcase: Release the capability and present the outcome to the wider Engineering team. Expected learning: - Card issuing concepts, including card lifecycle, spend controls, and transactions - API and distributed systems design - Production engineering including testing, observability, and reliability - Frontend for customer-facing experiences - Building within a global fintech platform Planned role & responsibilities - Actively participate in team standups, sprint reviews, and retrospectives to align with engineering priorities. - Collaborate with cross-functional partners (e.g., Operations, Finance, Infosec) to understand workflow requirements and validate outputs. - Contribute to code reviews, testing, and documentation. - Deliver bi-weekly project updates and participate in mid-point and final showcases to demo project. - Design, develop, and deploy an assigned Cards or Issuing project under mentor guidance. Outline of onboarding process steps in team: - Buddy assignment: Pair with a senior engineer/mentor for en…