I will build a production rag chatbot with langchain, vector database and fastapi

R
rohansha0
R
rohansha0
Rohan Shaw
build a production rag chatbot with langchain, vector database and fastapi
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build a production rag chatbot with langchain, vector database and fastapi
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build a production rag chatbot with langchain, vector database and fastapibuild a production rag chatbot with langchain, vector database and fastapi

About this gig

A RAG chatbot that answers from YOUR documents not hallucinations.


I build production-grade RAG chatbots with LangChain, vector database (Chroma / Pinecone / pgvector) and FastAPI backend. Chat with your PDFs, docs, website, or Notion deployed and ready to use.


WHAT YOU GET:

- Custom RAG pipeline (chunking, embedding, hybrid retrieval)

- Vector database setup + API (FastAPI, Python)

- Clean chat UI + chat history & sources (citations, so you know where the answer came from)

- Handles PDFs, DOCX, TXT, CSV, website URLs


TECH STACK:

Python, LangChain / LangGraph, ChromaDB, Pinecone, pgvector, FastAPI, PostgreSQL, Docker, OpenAI / Claude / Gemini / Llama (BYOK)


PROCESS:

1. You send your documents + use case

2. I build & test the RAG pipeline + API

3. You get a deployed chatbot + source code


WHY ME:

AI Engineer @ TheLinkAI I ship multi-agent RAG systems & 15+ FastAPI microservices in production daily. Core Developer @ Plone (65+ PRs). See portfolio: SwasthAI (RAG medical chatbot live on Play Store) + OpenZync (graph memory for AI agents).


PACKAGES: Starter $120 (50 docs) / Advanced $350 (300 docs+website) / Production $750


Message me before ordering with your docs.

  • Domain

    • Productivity
    • Research
    • Education
    • Data Analysis
    • Other

Get to know Rohan Shaw

Rohan Shaw

AI Agent and RAG Developer, FastAPI, LangGraph Production Backends

  • FromIndia
  • Member sinceJun 2021
  • Avg. response time1 hour

  • Languages

    Hindi, English
I build production-grade AI agents & Python backends that ship — not demos. I'm an AI Engineer @ TheLinkAI, where I run multi-agent orchestration (26+ tools), RAG pipelines & 15+ FastAPI microservices in production (PostgreSQL, Redis, Docker, GCP). Also a Core Developer @ Plone Foundation (65+ PRs merged) — I build systems that last. Need an AI agent, RAG chatbot, or scalable FastAPI backend? Message me with your idea before ordering — I'll map the fastest path to production.

My Portfolio

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