Staff Software Engineer Backend, Billing

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 2,300 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.

The Billing Team at Airwallex is at the forefront of transforming how businesses handle pricing, billing, and invoicing. Our mission is to create a seamless, scalable, and transparent billing platform that not only supports Airwallex's growth but also empowers our customers to easily manage their billing needs.
Our team is dedicated to developing a next-generation billing platform designed to offer flexible pricing strategies and intuitive invoicing solutions. This platform aims to be a cornerstone for businesses, enabling them to bill and get paid effortlessly. By integrating cutting-edge technology, we ensure that our solutions are easy to adopt and integrate, providing a robust billing experience for all users.
The engineering team spans across Shanghai and Singapore, offering the chance to collaborate with cross-functional teams around the world. Engage with various domains such as GTPN, PA, Scale, Issuing, and Spend to automate end-to-end pricing and billing processes. The work here is impactful, contributing to building a platform that empowers businesses globally, making a tangible difference in their operations.

We envision a future where our billing platform not only supports Airwallex internally but also serves as an easy-to-integrate product for our customers. By joining our team, you play a crucial role in realizing this vision, working alongside talented professionals to deliver business-critical features and solutions. Together, we will build the next-gen billing solution that empowers businesses worldwide.

This role is based in Singapore/Shanghai, China.

1. Lead the planning, design, and implementation of the Airwallex engineering system;
2. Work with the business/product team to deeply understand the business needs, scenarios, and subsequent development directions, complete system analysis, architecture design, and core function development, and be able to grasp the design of complex systems to ensure the quality of complex architecture;
3. Design and develop components based on the company's microservice framework;
4. Introduce innovative technologies and innovative solutions for the team;
5. Responsible for the construction and management of the technical team, and establish good internal coding standards.

We're looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.

1. More than 8 years of Core Java development, more than 5 years of experience in Internet application / large financial system / e-commerce platform development;
2. More than one year experience in payment platform development;
3. Bachelor degree in computer science and related majors;
4. Proficient in Java 8, familiar with Java multi-threading, high concurrency, IO / NIO, network communication, etc .;
5. Familiar with commonly used design patterns, with experience in design and development of large-scale distributed, high concurrency, high load, high availability systems;
6. Master various common server technologies, which can optimize service response and data query, ensure various service quality, and solve the problems of high concurrency and high availability;
7. Familiar with Spring / Spring Boot;
8. Familiar with HTTP, TCP / IP protocol and REST specifications;
9. Master Gradle / Maven and other build tools;
10. Familiar with the use of Docker cluster;
11. Familiar with JSON & XML.

1. International clearing and settlement / foreign exchange transactions;
2. Fluent in English;
3. Cassandra / Redis / NoSQL / Hadoop;
4. Kotlin / Scala / Python / Golang / R;
5. Docker Swarm / Kubernetes;
6. JavaScript / Angular / React / CSS3;
7. Aliyun Cloud / AWS.

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.