Santanu Nandi
AI/ML & GenAI Engineer | RAG & LLM Backend Systems | AWS
- Role
- Systems Engineer at Tata Consultancy Services
- Location
- Kolkata, WB, IN
- LinkedIn followers
- 500 followers
About Santanu Nandi
I build AI systems that don’t just generate responses - they generate decisions.With 4.5+ years of experience across Data Engineering and Applied AI, I design production-grade Generative AI systems that combine structured data pipelines with intelligent reasoning. My work sits at the intersection of Retrieval-Augmented Generation (RAG), scalable AWS architectures, and real-world risk detection use cases.From large-scale ETL pipelines to LLM-powered backend systems, I enjoy solving ambiguous problems and turning them into reliable, measurable, and scalable solutions. I’ve worked extensively with embeddings, vector search, prompt orchestration, and ML-driven classification models - always with a focus on production stability, evaluation, and impact.Technically strong in Python, PySpark, SQL, and AWS-native services, I specialize in bridging data infrastructure with modern AI capabilities.I’m particularly passionate about building: • Enterprise-grade RAG systems• Intelligent automation pipelines• Fraud and anomaly detection systems• Scalable AI backendsI believe the real power of AI lies not in experimentation - but in engineering it responsibly, efficiently, and at scale.
Experience
Systems Engineer
Jan 2023 — Present · Kolkata, IN
Education
Dr. B.C. Roy Engineering College
Bachelor's degree, Electrical Engineering
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