Staff Software Engineer, Backend

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 150,000 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 1,700 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$6.2 billion and backed by world-leading investors including Visa, Airtree, Blackbird, Sequoia, DST Global, Greenoaks, Salesforce Ventures, Lone Pine, and Square Peg, 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.About the Role We are looking for skilled Staff Software Engineer to help shape and evolve Airwallex's edge infrastructure-you'll architect and build the software foundations that power Airwallex's global edge. You'll write high‑quality code, design scalable services, and own end‑to‑end features that make our API gateway, CDN layer, DNS routing, and perimeter security smarter, faster, and more resilient.You'll partner closely with product, platform, and security experts to translate real‑world requirements into clean, maintainable code-and see your work go live for millions of requests every day.What You'll Be Doing Next‑Gen Edge Services: Architect and ship new gateway and CDN features (think plugin‑driven routing, smart cache policies, dynamic purge APIs). Security as Code: Build libraries and pipelines for rate‑limits, WAF/filter rules and bot‑detection, all embedded directly into our edge stack. Self‑Service Tooling: Create CLI/plugins and lightweight frameworks so other teams register APIs, enforce policies, and preview traffic insights in seconds. Rock‑Solid Reliability: Dive into metrics, pinpoint latency or fail‑over gaps, and deliver code‑level optimizations to keep every request fast and flawless. Minimum Qualifications Bachelor's degree or above in Computer Science, Engineering, or a related field. 5+ years of back‑end development experience, building large‑scale, high‑throughput services. Proficient in one or more languages such as Java, Go, Python, or similar, with strong software‑design and system‑thinking skills. Comfortable partnering across product, platform, and security teams; able to explain complex ideas clearly. Preferred Qualifications 3+ years designing and operating distributed, low‑latency systems (API gateway, cache, etc) or security‑focused development. Use data to identify performance or reliability bottlenecks and deliver targeted, code‑level improvements. Thrive in a fast‑paced environment, take full ownership of your work, and continuously iterate based on feedback. Why Airwallex This is a rare opportunity to work on core systems that directly shapes how users and partners around the world access Airwallex. You'll help build the critical systems that make our platform secure, performant, and globally available.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.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.