Software Engineer Backend, Billing

Attributes We Value: We hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you’re motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor. You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next.

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: 1. More than 3 years of Core Java development, more than 3 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.

Preferred qualifications: 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.