Responsibilities of Senior Backend Engineer: 1. Responsible for the development, unit testing, code optimization, and maintenance of the platform's IM backend program; 2. Responsible for technical research and solving operational problems during the project development process; 3. Participate in the optimization, deployment, and implementation of projects and platform systems; 4. Enhance the scalability and scalability of the overall system to ensure the sound development of technology and business on the system; 5. Writing relevant documents such as product technical standards and plans; Experience in IM development is preferred