Python Full Stack Developer | AI Conversation History (FastAPI, OpenAI)

We are improving our AI-powered SaaS application built with Next.js frontend and Python FastAPI backend using OpenAI API. The AI assistant currently works well, but it does not retain conversation history, which limits user experience. We need a developer to implement a lightweight AI conversation memory system so users can access and continue previous chats seamlessly. Tech Stack Python, FastAPI, OpenAI API, Next.js, REST APIs, PostgreSQL, Git, Cursor, Claude. Deliverables * Working AI conversation history system • Sidebar chat UI with past conversations • Backend APIs for storing and fetching chats • Fully integrated frontend + backend flow