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 200,000 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 2,200 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 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. THE OPPORTUNITY Our Growth Team sits at the heart of Airwallex’s mission, focusing on user acquisition and strategic market expansion. We leverage data and cutting-edge technologies to craft seamless, intuitive experiences that help millions of users discover, engage with, and benefit from our products. From new-user funnels to onboarding optimizations, our Growth team is all about experimentation, rapid iteration, and driving sustainable business impact. Whether it’s designing scalable architectures for high-traffic pages, building robust A/B testing frameworks, or integrating global marketing platforms, the Growth team’s contributions directly shape how we attract and retain customers worldwide. Joining the Growth team means you’ll have a front-row seat to the most crucial stage of our product lifecycle and play a pivotal role in fueling the next wave of our global expansion. WHAT YOU’LL DO Technical Strategy & Product Execution - Partner with Product and Design to define roadmap, scope, and success metrics; translate customer needs into an executable plan. - Work closely with product managers and key stakeholders to define product roadmap, prioritize projects and ship incrementally to production. - Engage with the Product Manager into building a backlog that continuously contributes to the execution of the roadmap. - Drive strong delivery practices: planning, prioritisation, execution, and continuous improvement. - Own the technical strategy and architecture for services and APIs, with a focus on scalability, reliability, security, and maintainability. - Stay hands-on where it matters: guide design reviews, de-risk complex initiatives, and raise the bar on engineering quality. Architectural Ownership & Quality - Serve as the accountable owner for the architecture and system quality across our services. - Analyze and validate the technique design for the software functions from the team. - Review code from team members and ensure the standards. - Drive design and code quality: institute standards, reviews, and automated checks that raise the bar without slowing teams down. - Guide the evolution of application and platform infrastructure to reduce operational overhead and improve developer productivity. - Establish operational excellence for production systems (monitoring, incident response, postmortems, reliability improvements), and ensure auditability/traceability is built in. - Champion secure coding practices, robust authentication/authorization, and proactive vulnerability management. WHO YOU ARE - 8+ years of backend engineering experience with a deep foundation in distributed systems, high-availability architectures, and designing for availability/consistency challenges. - Proficiency in modern JVM ecosystems (Java 17+, Kotlin, Spring / Spring Boot) including multi-threading, high concurrency, IO/NIO, and network communication. - Expert knowledge of design patterns, microservices architecture, and event-driven/streaming systems (e.g., Kafka). - Hands-on experience with GCP/AWS, Docker, and Kubernetes, combined with a strong grasp of observability tools like Splunk, Grafana, and Prometheus. - Experience in developing large-scale system control interfaces and a track record of building API- and integration-heavy systems in production. - You take initiative and skillfully navigate complex technical challenges to deliver impactful results. Preferred Qualifications / What Will Set You Apart - Experience building scalable growth features (referral systems, dynamic funnels) with a focus on reducing "Time-to-Value." - Background in A/B testing frameworks and using data analytics to optimize customer onboarding and conversion. - Familiarity with building products using AI & LLMs (e.g., personalization or intelligent self-serve tools). - Polyglot experience with other modern languages such as Scala, Javascript, Python, or Golang. MINIMUM QUALIFICATIONS - 5+ years of backend engineering experience - Proficiency in modern JVM ecosystems - Knowledge of design patterns, microservices architecture, and event-driven/streaming systems - Hands-on experience with cloud services and observability to