I integrated the Sendbird SDK to implement real-time chat functionality, enhancing user communication during travel planning. I developed responsive user interfaces using React, focusing on features like message bubbles and typing indicators. On the back end, I utilized Node.js and Express to manage Sendbird API integrations, ensuring secure message handling and user authentication. Additionally, I designed MongoDB data models for efficient storage and retrieval of user information and chat histories. This project significantly improved user engagement and retention on the platform.