Job responsibilities: 1. Responsible for the operation and maintenance of the company's business, improving business stability and engineering efficiency, maintaining efficient communication with business parties, and establishing good cooperative relationships; 2. Responsible for middleware operation and maintenance, enhancing the service-oriented capabilities and stability of basic components and platforms; 3. Responsible for the planning, construction, and development of the operation and maintenance platform, establishing and improving a standardized operation and maintenance service system; 4. Responsible for online major problem investigation, emergency accident handling, and subsequent accident analysis and optimization; 5. Continuously promote the improvement of business quality: SLA, multi active disaster recovery, fault drills, monitoring alarms, capacity management; 6. The high availability design and performance optimization of the business server architecture ensure efficient and reliable business iteration.