I will ai rag chatbot with langchain, vector db, and nextjs

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rabiul5334
R
rabiul5334
Rabiul Khan
ai rag chatbot with langchain, vector db, and nextjs
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ai rag chatbot with langchain, vector db, and nextjs

About this gig

Want an AI chatbot that actually understands YOUR business data?

I will build a powerful, production-ready AI RAG Chatbot that provides accurate, context-aware answers from your own documents, website, or knowledge base.

What You'll Get:

  • Advanced RAG pipeline (LangChain / LlamaIndex / LangGraph)
  • Vector Database integration (Pinecone, Supabase pgvector, Chroma, Weaviate)
  • Modern Next.js 15 + TypeScript frontend with beautiful UI
  • Streaming responses + intelligent conversation memory
  • Multi-document support (PDF, DOCX, TXT, Markdown, web scraping)
  • Admin dashboard for document management & analytics
  • User authentication & role-based access control

Tech Stack:

  • Frontend: Next.js 15 (App Router), Tailwind CSS, shadcn/ui
  • AI Models: GPT-4o, Claude, Groq, Llama 3, DeepSeek
  • Backend: FastAPI or NestJS
  • Deployment: Vercel + Railway / Render

Use Cases:

  • Customer support chatbot
  • Document Q&A assistant
  • Internal company knowledge base
  • Resume / Legal document analyzer
  • Product recommendation system

Why Choose Me?

  • Oracle Certified Professional (OCP)
  • Full-stack developer with production AI + SaaS experience
  • Verified portfolio on HirePilot & CodeArena
  • Clean, scalable TypeScript code + complete documentat

  • Bot type

    • Customer Service & Support
    • E-commerce & Payments
    • Social Media & Content
    • Scheduling & Assistance
    • Learning & Development
    • Travel & Transportation
    • News & Information Updates
    • Other

  • AI engine

    • DeepSeek
    • Gemini
    • Open AI GPT
    • Grok
    • LangChain
    • LLaMA
    • Variational Autoencoders (VAEs)
    • Claude.ai
    • ChatGPT
    • Ollama

  • Programming language

    • JavaScript
    • TypeScript

  • Tools & frameworks

    • Botpress
    • Rasa
    • Dialogflow
    • n8n
    • Other

  • Platforms

    • WhatsApp
    • Telegram
    • Discord
    • Instagram
    • Websites

Get to know Rabiul Khan

Rabiul Khan

Full Stack Software Engineer Nextjs MERN Enterprise Database and SaaS

  • FromBangladesh
  • Member sinceFeb 2021

  • Languages

    English
As an Oracle Certified Professional with an MBA from the University of Dhaka, I combine technical precision with business logic. With experience leading teams to build production-grade platforms like CodeArena, I specialize in scalable SaaS solutions using Next.js and the MERN stack. My expertise extends to Docker, Redis, and Enterprise Databases (Oracle/PostgreSQL), ensuring your application is not just functional but built for high performance and security. Currently, I am developing HirePilot, an AI-driven career platform designed for automated recruitment and ATS scoring.

My Portfolio

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