I will build custom ai agents, chatbots and rag apps using langchain and fastapi

I
i_ericstephen
I
i_ericstephen
Eric S.

Level 2

build custom ai agents, chatbots and rag apps using langchain and fastapi
Full Screen
build custom ai agents, chatbots and rag apps using langchain and fastapi
Full Screen
build custom ai agents, chatbots and rag apps using langchain and fastapibuild custom ai agents, chatbots and rag apps using langchain and fastapi

About this gig

Looking for a powerful AI solution that goes beyond basic chatbots?

Youre in the right place!


I specialize in AI-driven backend development with Python (FastAPI, Django) and build custom AI agents, chatbots, voice agents, and RAG applications using the latest frameworks like LangChain, OpenAI, and vector databases.


Whether you need:

  1. A custom AI chatbot for your business
  2. A voice AI agent that can interact naturally with users
  3. An AI knowledge base assistant using RAG (Retrieval Augmented Generation)
  4. A full-stack AI web app with React frontend + FastAPI backend
  5. Cloud deployment on AWS / Digital Ocean for production


I provide end-to-end development from designing the backend to building modern UIs and ensuring scalable deployment.


Why Choose Me?

  • Strong expertise in Python (FastAPI, Django)
  • AI frameworks: LangChain, RAG, OpenAI, LLM fine-tuning
  • React frontend for modern, responsive user experience
  • Cloud deployment (AWS, Digital Ocean) for production-ready apps
  • Clear communication + scalable architecture


With me, you dont just get code. You get a production-grade AI solution built for real users.

  • AI Model Frameworks & Tools

    • LangChain
    • AutoGPT / Agent GPT
    • n8n
    • OpenAI ChatGPT
    • Anthropic Claude
    • Google Gemini
    • Meta Llama
    • OpenRouter
    • xAI Grok
    • Perplexity

  • Platform

    • Zapier
    • Microsoft Power Automate
    • Workato
    • Tray.io
    • Zoho Flow

  • Type

    • Email automation
    • Task automation
    • Web scraping
    • Sales & Lead Generation
    • CRM & Internal Workflows

  • Automation Integration Points

    • Website
    • Mobile app
    • Google Sheets
    • Trello
    • Slack
    • Email
    • Airtable
    • Asana
    • Shopify
    • Salesforce
    • Mailchimp
    • Social Media
    • Hubspot
    • TypeForm
    • JotForm

  • Programming Language

    • Python
    • JavaScript
    • Go
    • Other

Get to know Eric S.

Eric S.

AI SaaS MVP Expert, Revenue Ready in 7 Days, Level 2 Seller

5.0(75)

Level 2

  • FromPakistan
  • Member sinceApr 2021
  • Avg. response time1 hour
  • Last delivery5 months

  • Languages

    English
Hi, I’m Eric Stephen, Columbia University graduate (Class of 2016) with 9+ years full-stack experience. I specialize in AI-powered SaaS MVPs, custom AI web apps & intelligent agents using Next.js, OpenAI (GPT/Groq/Claude), Supabase, LangChain & FastAPI. My passion is database architecture & scalable backends (PostgreSQL, MySQL, MongoDB). Every AI solution I build is production-ready, secure & built to grow. I deliver clean, high-quality code fast for full AI SaaS MVPs (auth, payments, analytics) or custom AI agents/chatbots with RAG. Let’s turn your AI idea into a revenue-ready product!

My Portfolio

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