Senior Frontend Engineer, Billing

About Airwallex Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 675,000 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 2,700 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. How you'll make impact Help build the next-generation billing platform that supports Airwallex internally and gives customers an easy-to-integrate way to manage billing and revenue workflows. Build high-quality products with React and TypeScript, using the latest versions and modern frontend engineering practices. Design and develop micro-frontend web applications using domain-based architecture and a single-SPA framework. Build scalable, high-performance Node.js backend-for-frontend services with Apollo GraphQL and well-defined contracts for backend integration. Partner with Design to develop a shared design system and reusable components, creating a consistent UI and UX across domain teams. Deliver NPM packages, reusable library widgets, and open-source projects that make customer integration easier. Deploy micro-frontends and Node.js services using GCP, Alibaba Cloud Kubernetes, bucket CDN, Cloudflare, and GitLab CI/CD. Build reliable unit and end-to-end test coverage using React Testing Library, test-rendering tools, and Cypress. Develop no-code and serverless CMS capabilities for corporate websites and branding landing pages using Contentful and Next.js. Engage with the frontend guild, research emerging technologies, drive engineering initiatives, and help reduce technical debt. You'll work from our Singapore office What we're looking for Essentials 5+ years of frontend development experience, including 2+ years of frontend architecture experience. Experience developing large-scale financial web systems. A bachelor’s degree or above in computer science or a related field. Strong knowledge of HTML5, CSS3, ECMAScript 6+, and TypeScript. Strong experience with React, Vue, Angular, and their surrounding technology stacks. Experience with Emotion, styled-components, and SCSS. Familiarity with Material UI, Ant Design, Bootstrap 3, or other CSS frameworks. Familiarity with HTTP/HTTPS protocols and RESTful API design. Experience with Webpack, polyfills, and Rollup.js. Experience building backend-for-frontend services with Node.js. Preferred Experience developing frontend frameworks. A track record of sharing frontend technical work through blogs, public accounts, or similar channels. Overseas study or work experience. Experience with GraphQL, Next.js, Redis, and relational databases. Experience with tracking and data analytics tools such as GA and GTM. Experience with CSS animation, Zeplin, Abstract, responsive mobile web development, UI, or visual identity. Experience with BDD, TDD, CI/CD, Docker, Kubernetes, Nginx, or other DevOps practices. Experience with Java, Kotlin, or Shell development. You'll thrive here if You're comfortable owning the roadmap yourself. You're comfortable making decisions with incomplete information and moving quickly anyway. You hold yourself to a high standard even when no one is watching. Quality and accountability aren't external expectations, they're internal ones. You value in-person collaboration and are happy being in the office five days a week. You're comfortable operating across time zones with a globally distributed team, including colleagues based in APAC and EMEA. Learn more about your team The Billing team at Airwallex builds a single platform that charges for everything: how we bill our customers, and how our customers bill theirs. We own the quote-to-cash engine behind Airwallex's fastest-growing revenue stream, from usage-based billing and pricing to the checkout experience that collects across 130+ currencies and 160+ payment methods. The hard part: one system serves two masters, Airwallex's own books and the revenue of every business that bills through us, so every number has to reconcile to the cent, in real time, under audit scrutiny. You'll thrive here if correctness is non-negotiable and you think like a product owner as much as an engineer. If you want billing to be the growth engine of the AI economy, this is where it's built. Applicant Safety Policy: Fraud and Third-Party Recruiters 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. Equal opportunity 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.