Experienced Ai Chatbot Developer for Professional System

We are seeking an experienced developer to build a complete, professional AI-powered chatbot system. This project requires a modern interface, a reliable backend, and a comprehensive administrative dashboard.

Key Requirements:
- Integrate OpenAI or another Large Language Model (llm) api to enable intelligent conversations and contextual responses.
- Implement a robust knowledge base system with support for faq content and the ability to process information from pdf and txt documents.
- Develop a responsive chat interface that provides an optimal user experience on both desktop and mobile devices.
- Create an intuitive admin dashboard for managing chatbot settings, content, user conversations, and overall system configuration.
- Implement secure database storage, user authentication mechanisms, and robust security protocols.
- Deploy the complete application to a production environment.
- Provide all source code and comprehensive documentation upon project completion.
- Conduct thorough testing of the system and resolve any bugs or issues prior to final delivery.

We are looking for a secure, reliable, and production-ready chatbot system. Hosting and ai api costs should be specified separately. Successful delivery may lead to future collaboration opportunities.