- Solid foundation knowledge of Java, mastering IO, multithreading network programming, and JVM. Familiar with common design patterns; - Familiar with mainstream technology frameworks such as Spring, SpringMVC, mybatis, message queue, cache, and experience of knowledge on framework source code is preferred; - Experience in distributed system development, familiar with the principles of dubbo,zk or other distributed service frameworks, and have a deep understanding and practice of highly concurrent and highly available distributed framework design; - Experience in using hadoop framework and storm or spark streaming computing practice experience is preferred; experience in credit business is preferred; - Critical thinking and clear logic, good communication skills, strong resistance to stress and autonomous learning ability; - Proficiency in Chinese, English and Khmer languages. * Net Salary: 2000-4000 USD / month after tax (It can be negotiated for those whom with outstanding technical abilities and project experience).