AI Full Stack Developer for RAG Chatbot & AI Agent MVP

We are looking for an AI Full Stack Developer to help us build the first version of an AI-powered web application with a RAG chatbot and basic AI agent workflow. The goal is to create a working MVP where users can ask questions from uploaded or structured knowledge, receive AI-generated answers, and interact with the system through a clean web interface. The work will include frontend, backend, AI integration, database setup, API development, and basic product architecture. Scope of Work Build or improve the AI chatbot interface using React / Next.js Create backend APIs using Python / FastAPI or Node.js Integrate OpenAI or Claude for AI responses Set up a basic RAG workflow for uploaded or structured knowledge Use LangChain or a similar framework for LLM workflow management Add basic AI agent logic for handling structured user queries Connect database/storage using PostgreSQL, Supabase, or MongoDB Add AI response streaming or real-time chat experience if practical Test the MVP and fix important issues Provide a short handoff note explaining the setup and next steps Required Skills AI Full Stack Development AI App Development RAG Chatbot Development AI Agent Development OpenAI API LangChain Python FastAPI Next.js React Node.js SaaS Development API Integration Expected Outcome A working first version of an AI SaaS MVP with chatbot/RAG functionality, AI workflow integration, frontend interface, backend APIs, and a clear technical path for the next phase.