Sayan Debnath

AI Backend Engineer · Distributed Systems · FastAPI

RAG systems, agent workflows, and APIs that actually scale.

3+
Companies
10+
Technologies
1.5+
Years
FastAPI LLMs RAG Docker React

$

Experience

Aug 2025 - Present · Smarter Codes

Full Stack Engineer

  • Built RAG pipelines with semantic retrieval
  • Designed scalable FastAPI services
  • Reduced processing time by ~60%
Jan 2025 - Aug 2025 · Cogzin Technologies

Full Stack Developer

  • Developed finance AI platform
  • Optimized APIs and DB performance
  • Mentored developers
Sep 2024 - Jan 2025 · Groveus Informatics Pvt.Ltd

Web Developer

  • Built PHP apps using CodeIgniter
  • Improved UI/UX performance

Projects

DocuMind AI

Production-grade RAG system with citation-backed answers.

Live →

Semantic Search Engine

Vector search engine for crawling and indexing websites.

Live →

WhatsApp AI Bot

LLM-powered assistant for travel & food recommendations.

GitHub →

Resume

My Resume

You can view or download my full professional resume below.

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Contact

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