I will build a custom ai chatbot with rag over your documents

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Lenin Chavez

About this gig

Do you have documents, PDFs, or a knowledge base that customers or your team constantly need to query? I'll build you a custom AI chatbot that answers questions accurately using only YOUR data, not generic internet knowledge.


This is called RAG (Retrieval-Augmented Generation): the chatbot retrieves the exact relevant content from your documents before generating a response. No hallucinations. No made-up answers.


What I deliver:

  • AI chatbot connected to your documents or knowledge base
  • FastAPI backend ready to embed in your website or app
  • Vector database for fast, accurate retrieval
  • Clean source code, fully documented
  • Deployed and tested end-to-end


Built with Python, LlamaIndex, and OpenAI. Same stack behind Mentor CEAM (mentorceam.com), a live medical AI platform.


Message me before ordering so we can scope your project correctly.

Get to know Lenin Chavez

Lenin Chavez

AI Engineer that connect AI with real apps

  • FromPeru
  • Member sinceJun 2025
  • Languages

    English, Spanish
AI Engineer focused on building production-ready AI systems — RAG chatbots, multi-agent automations, and AI-powered APIs. For example, I built a medical AI platform with a LlamaIndex RAG pipeline over clinical literature. I also design and ship multi-agent systems with LangGraph. My edge: I don't just build the AI — I deploy it too. Python, FastAPI, Docker, GCP, Azure, Terraform. Available for remote work immediately.

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