I will build a fastapi backend for your ai or web app

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Vijay D

About this gig

I build FastAPI backends for AI tools and web apps - clean, documented, and ready to connect to whatever frontend or client you have.


Recent example: FilingIQ, a financial-document RAG assistant with a FastAPI backend that auto-fetches SEC/NSE/XETRA filings, chunks and embeds them, and serves citation-grounded answers via the Claude API, containerized with Docker.


What you get:

  • REST API endpoints designed around your data model
  • - Database integration (PostgreSQL, MySQL, or SQLite) with SQLAlchemy
  • - JWT authentication if your app needs user accounts
  • - Auto-generated Swagger/OpenAPI docs
  • - Clean, documented Python code you can hand off to another developer

Tell me what your app needs to do and I'll scope the endpoints before we start, so there are no surprises on either side.

Get to know Vijay D

Vijay D

Python Full Stack Developer FastAPI React and Claude API RAG

  • FromIndia
  • Member sinceAug 2026
  • Avg. response time1 hour
  • Languages

    English, German
Python full-stack developer specializing in FastAPI backends, React frontends, and LLM/RAG integrations with the Claude API. I build citation-grounded chatbots, data pipelines, and API integrations for production apps - see FilingIQ, a financial-document RAG assistant, and Chatrio, a real-time chat platform, in my portfolio. M.Sc. Artificial Intelligence student at FAU Erlangen-Nurnberg with a B.E. in Computer Engineering and prior professional experience as a web developer. Reliable, detail-oriented, and comfortable working directly with clients to scope and ship real features.

My Portfolio