Deepu Rajak

Hello all. I am Deepu Kumar Rajak, a Data Scientist and a graduate of IIT Kharagpur.Throughout my career, I have focused on building intelligent systems that solve real-world problems using Machine Learning and Generative AI:

At LifeFy, I am currently developing a production-grade AI health platform. I have built RAG pipelines using the OpenAI Assistant API and optimized GPT-4o with domain-specific prompt engineering to provide personalized care based on user health records.

At Careervira, I worked as a Data Scientist where I handled large-scale edtech data. I built a text classification workflow that improved query categorization accuracy from 74% to 94% using LDA topic modeling and ensemble learning.

Technical Projects: I developed "Smart Care AI," which uses an ensemble of Random Forest and XGBoost to predict cardiovascular risk, combined with a Gemini-powered RAG system for clinical queries. I also built a "WhatsApp Chat Analyzer" that uses VADER sentiment analysis to track emotional trends in conversations.

My Core Skills include Python, SQL, and deep expertise in NLP, LLMs, and vector databases. I also have a strong foundation in MLOps tools like Docker, Kubernetes, and Jenkins to ensure models are scalable and production-ready.I am passionate about taking complex data and turning it into simple, actionable insights that drive product value.