Job responsibilities: 1. Responsible for hierarchical management of users and conducting refined operations; 2. Responsible for user engagement, retention, and recall work, producing operational strategies tailored to users from the perspectives of promotion, trading, etc., to increase business volume. Analyze user data, mine user characteristics, extract user tags, and provide strategic support for user side operations; 4. Pay attention to market changes, conduct user research, explore users' real needs, effectively analyze user needs and propose optimization suggestions for products, enhance user stickiness, and improve user value; 5. Regularly review and analyze user data, and manage the entire lifecycle of users effectively.