1. Complete business requirements analysis and development design; 2. Complete the writing of core code according to requirements; 3. Discover, analyze, and solve possible problems in the system to ensure the stable operation of the system; 4. Responsible for writing development documents.

Job Responsibilities: 1. Complete business requirements analysis and development design; 2. Complete the writing of core code according to requirements; 3. Discover, analyze, and solve possible problems in the system to ensure the stable operation of the system; 4. Responsible for writing development documents. Work requirements: 1. More than 5 years experience in JAVA development, English is the working language; 2. In-depth understanding of common concepts such as IOC, AOP, multithreading and concurrency, file operations, I/O, network, etc., familiar with JVM, and have practical experience in tuning; 3. Proficient in using spring, springboot, springcloud, familiar with other mainstream frameworks and technologies: mybatis, redis, MQ, nginx, dubbo, etc.; 4. Experience in distributed development of microservices, familiar with cache, message, nosql and other related knowledge; 5. Familiar with the use and characteristics of MySQL, have good database design ability, and be able to perform performance tuning of the database; 6. Familiar with MongoDB, have massive data processing experience, familiar with the use and optimization of MongoDB; 7. Those with payment system development experience are preferred, and those with big data experience are preferred.