Job responsibilities: 1. Participate in the development and maintenance of daily projects, undertake Java project technical research, technical refactoring, problem localization, and other work; 2. Participate in the development of core modules, deeply explore and analyze business requirements, and carry out system design and detailed module design; 3. Write corresponding technical documents, strictly code according to development specifications, and ensure project progress and quality; 4. Conduct macro level thinking on existing or future systems, introduce innovative technologies and solutions to address product defects;