I will build a fastapi backend or llm powered API for your app

L
lithenpavansai
L
lithenpavansai
Lithin Pavan
build a fastapi backend or llm powered API for your app
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build a fastapi backend or llm powered API for your app
Full Screen
build a fastapi backend or llm powered API for your appbuild a fastapi backend or llm powered API for your app

About this gig

Need a backend that actually works in production?


I build FastAPI backends and LLM-powered APIs that are fast, clean, and production-ready.


What I deliver:

REST API with FastAPI or Flask

LLM integration (OpenAI, Claude)

JWT authentication + role-based access

Database design (MySQL / SQLite)

Docker deployment ready

Sub-250ms response time optimized


Built and shipped real systems:

Project management platform 50+ users,

sub-250ms APIs, JWT auth

AI pipeline 92% eval success rate,

4-stage LLM processing


Perfect for:

Startups needing backend from scratch

Developers adding AI/LLM to existing apps

Founders building MVP backends fast


Clean code. Production ready. Real results.

  • Programming language

    • Python

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • FastAPI
    • Flask
    • Node.js

Get to know Lithin Pavan

Lithin Pavan

Vibe Coding Expert FastAPI and AI Developer Scalable Backends

  • FromIndia
  • Member sinceMar 2023

  • Languages

    English, Telugu
Backend and AI Developer with production shipped systems. I build FastAPI backends, LLM powered APIs, and fix vibe coded apps built on Lovable, Replit, Base44 and Bolt. Shipped real products with 92% eval success rate, sub-250ms API response times, and JWT optimized auth serving 50+ real users. What I deliver: - FastAPI and Flask REST APIs - LLM integration with OpenAI, Claude and Groq - Vibe coding fixes, review and consultation - Docker and production deployment

My Portfolio

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