工作职责：Internal company web application, using Java and Spring framework to meet customer needs. Assist in establishing database architecture to ensure data security and consistency. Optimize existing code to improve performance and reduce system crashes and errors. Participate in troubleshooting and problem resolution to ensure smooth operation of the system. Lead small teams, coordinate development activities, and ensure projects are delivered on time. Use agile development methods to accelerate the development cycle and improve team efficiency. Skills and tools: Java programming language, Spring framework, Hibernate, database management, agile development.