AI Chatbot Developer Needed for Doctor Appointment Booking Website

We are looking for an experienced AI / Full-Stack Developer to build a modern and professional website for Smile Dental, including a complete online appointment booking system and an integrated AI chatbot. The website will be built from scratch and should include dental services, doctors/dentists, branches, clinic timings, patient registration/login, appointment booking, appointment management, and a responsive modern UI for desktop and mobile. The appointment system should allow patients to select a branch, service, doctor, date, and available time slot, then book and manage their appointments. The system must use real appointment availability and proper backend/database integration. The AI chatbot should be directly connected to the Smile Dental website and booking system. It should answer questions about doctors, services, branches, timings, and clinic information, help patients find suitable doctors/services, check real-time availability, and assist with booking, rescheduling, cancellation, and appointment details where applicable. This should NOT be a simple ChatGPT widget. The chatbot must use actual system data through secure APIs/backend functions and must not generate or guess doctor information or appointment availability. Preferred stack: Next.js / React TypeScript Node.js Supabase / PostgreSQL OpenAI / Claude / Gemini Vercel The developer should recommend the most suitable AI model and architecture based on accuracy, cost, performance, and scalability. Patient authentication and data security are important. Patients must only be able to access their own appointment information, with secure API endpoints and proper authorization. Deliverables Complete Smile Dental website Responsive modern UI Doctors, services, branches, and clinic information Patient authentication Complete appointment booking system Real-time appointment availability Appointment management AI chatbot with LLM integration AI tool/function calling and backend integration Secure database/API integration Testing and bug fixing Production deployment on Vercel We are looking for someone who can handle the project end-to-end, from development and database setup to AI integration, appointment booking, testing, and Vercel deployment.