Senior Software Engineer, Billing (Frontend) at Airwallex (Singapore)Senior Software Engineer, Billing (Frontend)

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 ouroperating principles to see it in full.

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.

• You’ll shape frontend architecture for high-quality products using React, TypeScript, micro-frontends, GraphQL and Node.js, while partnering closely with product managers, designers and backend engineers across regions.
• You’ll contribute to design systems, shared component libraries, reusable packages and frontend platforms that scale with Airwallex’s growth.
• You’ll raise engineering standards through testing, deployment automation, technical research and efforts to reduce technical debt.
• You’ll design and deliver reliable, maintainable frontend systems in production.

You’ll work from the Singapore office five days a week.

Essentials

• A bachelor’s degree or above in Computer Science or a related engineering discipline.
• 5+ years of frontend development experience, including 2+ years working on frontend architecture.
• Strong experience with React and at least one other modern frontend framework, such as Vue or Angular.
• Strong knowledge of HTTP(S), RESTful APIs and modern build tools such as Webpack, Rollup.js or equivalent.
• Experience building Backend-for-Frontend layers using Node.js.
• Clear communication across technical and non-technical stakeholders.
• Pragmatic decision-making on when to optimise for performance versus velocity based on business impact.
• Experience thriving in cross-functional environments spanning Product, Design, Compliance, and Sales.
• A track record of designing for scale, maintainability, and production excellence.

• Experience with micro-frontend architecture, Single-SPA or equivalent domain-based frontend platforms.
• Experience with GraphQL and Apollo in Backend-for-Frontend applications.
• Experience building design systems, shared component libraries, NPM packages or reusable widgets.
• Experience with React Testing Library, Cypress or comparable unit and end-to-end testing tools.
• Experience deploying frontend and Node.js services using cloud infrastructure and CI/CD pipelines.
• Experience with Next.js and headless CMS platforms such as Contentful.

You'll thrive here if

• You're comfortable owning the roadmap yourself.
• You own the outcome and you don't wait for permission to fix what's broken.
• You're comfortable operating across time zones with a globally distributed team, including colleagues based in APAC and EMEA.
• You communicate clearly and directly across cultures, and you're thoughtful about how context shifts meaning across borders.
• You simplify complexity rather than hiding behind it.

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.

#singapore 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.

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.