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Saptarshi Bandopadhyay

@saptarshi

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I’m an AI ML Engineer specializing in LLM applications, agentic systems, RAG, and backend engineering.

India

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What I'm looking for

Looking for a challenging role that leverages my skills to drive innovation and growth.

My experience spans the full application layer around AI systems—from LLM orchestration and retrieval pipelines to APIs, databases, asynchronous processing, workflow state, integrations, and observability.

I've built and contributed to systems including AI assistants processing hundreds of emails per hour, multi-stage LangGraph workflows integrated with Microsoft Graph webhooks, RAG systems over tens of thousands of documents, and automated ETL pipelines processing approximately 10,000 records per day.

I also have a strong backend focus, working with Python, FastAPI, SQLAlchemy, PostgreSQL, MySQL, AsyncIO, Docker, and REST APIs. I enjoy designing systems where AI is one component of a larger, reliable software architecture rather than treating the LLM as the entire application.

Core areas: AI Agents · LLM Applications · RAG · LangGraph · Backend Engineering · Python · FastAPI · PostgreSQL · SQLAlchemy · AsyncIO

Currently open to AI Engineer, LLM/Generative AI, and Python Backend Engineer opportunities.

Experience

Work history, roles, and key accomplishments

AI Engineer

AI Tech UK

Jan 2026 - Apr 2026 (3 months)

• Engineered an Outlook AI assistant processing hundreds of emails/hour, automating scheduling, responses, follow-ups, delegation, and meeting notes.
• Designed a 9-stage LangGraph warehouse-compliance workflow with Microsoft Graph webhooks to classify 6 workflows, extract compliance data, track states, and generate risk reports.

Python fastAPI MySQL SQLAlchemy LLM LangGraph Docker

AI Engineer

AI Tech UK

Sep 2025 - Dec 2025 (3 months)

• Engineered an event automation platform using FastAPI, MySQL, and SQLAlchemy to orchestrate attendee, sponsor, and partner workflows across hundreds of registrations per event.
• Implemented form-triggered processing, event matching, scheduling, automated email routing, onboarding, follow-ups, and database-backed workflow tracking.

Python fastAPI MySQL Webhooks SQL

Machine Learning Engineer Intern

Binoloop

Sep 2025 - Jan 2026 (4 months)

• Architected a multi-step LangGraph RAG agent over a corpus of tens of thousands of documents, using Milvus hybrid search and streamed responses with query expansion, query decomposition, and answer
regeneration.
• Built an autonomous AI-ETL agent that scraped and transformed 10,000 records/day, automatically
processing unstructured sources for PostgreSQL ingestion.

Python Milvus PostgreSQL LangGraph SQL fastAPI