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atharva-mashalkar/README.md

Hi, I'm Atharva

AI Engineer at Meltwater. I build AI agents and LLM systems that work in production. Previously a Data Scientist at BNP Paribas and American Express · IIT Madras (B.Tech + M.Tech, Data Science)

What I work on

  • Agentic AI: production AI agents with LangGraph, Claude, and the Model Context Protocol (MCP)
  • Context engineering: making agents see the right information on every turn, so they stay accurate, fast, and affordable
  • LLM fine-tuning and evals: LoRA fine-tuning of open-source models, and LLM-as-judge evaluation
  • Retrieval and document AI: RAG with ColBERT, HyDE, and reranking, plus OCR and document understanding

Highlights

  • Work on Mira, Meltwater's agentic AI assistant, offered to 27,000 customers including Microsoft
  • Lead Synapse, a 4-person R&D team. I set the research direction and designed 30+ experiments across classic ML, embeddings, and LLMs
  • Built an LLM trade-validation app at BNP Paribas, projected to drive €20M in annual profit
  • Winner of 2 internal hackathons at Meltwater · Rank 2 of 225 in a national data science championship

Featured projects

Project What it is Stack
Regulation RAG Assistant Cited Q&A over EU banking regulation with ColBERT and HyDE ColBERT, HyDE, Streamlit
EcoAI Private local-LLM document chat with proposition-level retrieval Ollama, ChromaDB, reranking
GuessWars A transformer written from scratch that plays Hangman (63% win rate) PyTorch, self-play

Tech I use

Python LangGraph LangChain MCP Claude OpenAI PyTorch Hugging Face LoRA LangSmith RAG FastAPI PostgreSQL Redis Docker Kubernetes Terraform AWS Azure

Open source

LinkedIn · Portfolio coming soon

Pinned Loading

  1. Eco-AI Eco-AI Public

    Private local-LLM document chat with proposition-level, two-stage retrieval and reranking (Ollama, ChromaDB, Streamlit).

    Python

  2. regulation-chatbot regulation-chatbot Public

    Cited Q&A over EU banking regulation (CRR) using ColBERT late-interaction retrieval, HyDE and winnowing. Streamlit UI.

    Python

  3. guesswars guesswars Public

    A transformer written from scratch that plays Hangman: synthetic pre-training and self-play fine-tuning, 63% win rate. PyTorch.

    Python

  4. yolact_concrete yolact_concrete Public

    Concrete crack detection and segmentation with YOLACT instance segmentation.

    HTML