We are seeking a Sr. Java Spring Boot Engineer to lead the design and development of enterprise‑grade backend applications supporting large‑scale payment and infrastructure platforms. The ideal candidate combines deep expertise in modern Java, Spring Boot, distributed systems, and cloud‑native development on Alibaba Cloud with strong software architecture skills and experience delivering high‑performance, mission‑critical solutions.

• Design, develop, and maintain scalable backend applications and microservices using Java 17+/21, Spring Boot, and modern software engineering best practices.
• Architect and build high‑performance, resilient, and secure systems supporting payment processing, infrastructure services, and other business‑critical platforms.
• Design RESTful APIs, event‑driven solutions, and distributed systems using technologies such as Kafka while ensuring scalability, reliability, a...