Senior Frontend Engineer - Growth

About Airwallex Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 676,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own. We started in Melbourne in 2015 to build the infrastructure global commerce runs on. We're the regulated backbone behind global payments: not by accident, but by design. A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific. We're co-headquartered in San Francisco and Singapore, with more than 2,300 people across 27 offices. We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do. Read our operating principles to see it in full. About the team 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 As a Frontend Engineer within the Growth team, you will architect and build scalable, high-performance frontend solutions that power growth funnels, landing pages, and marketing campaigns. You will drive experimentation, collaborate closely with cross-functional teams, and enable data-driven strategies that shape how we acquire and engage users globally. This role is based in San Francisco. Responsibilities: Design, develop, and enhance highly scalable, performance-driven frontend solutions using React and TypeScript for growth initiatives, including landing pages and marketing campaigns. Write well-tested, maintainable, and efficient code, ensuring robust performance and smooth user experiences. Collaborate with data scientists and product managers to track and interpret critical user behavior metrics, supporting A/B testing, feature flagging, and experimentation frameworks. Work closely with Design, Product, and Marketing teams to deliver intuitive, delightful user interfaces and continuously refine key user journey flows to increase conversions and reduce friction. Develop rapid prototypes to validate new ideas or hypotheses related to user acquisition and engagement; use insights to iterate quickly. Champion frontend best practices, uphold high standards of code quality, and drive technical leadership and architectural decisions for growth-focused products. Integrate secure coding practices and frameworks to protect user data and proactively identify and address potential vulnerabilities, ensuring compliance with global regulations. Who you are We’re looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory. Minimum qualifications: 6+ years of professional frontend software development experience. Bachelor’s degree in Computer Science, Engineering, or a related technical field. Strong foundation in TypeScript and front-end frameworks like React, with an ability to craft clean, modular, and maintainable code. Experience with user-centric development, user research, and design thinking. Demonstrated abil