Job responsibilities: 1. Responsible for backend development of web3 products, including business logic processing, data storage, API design, and other aspects; 2. Develop and maintain backend code for financial products based on existing backend frameworks such as Spring, Django, etc; 3. Work closely with front-end developers and product teams to ensure optimal functionality and user experience of the product; 4. Participate in requirement analysis, design, and implementation of project development, provide backend technical solutions and implementation suggestions.