• Developed a scalable Retrieval-Augmented Generation (RAG) pipeline to extract and retrieve insights from over 100+ GB PDF corpus, performing data extraction, semantic chunking, and embedding using Hugging Face’s BAAI/bge-base-en-v1.5 model. • Implemented FAISS for vector search and evaluated IVFPQ indexing as an optimal approach (less than 100 ms latency) for large-scale retrieval, combined with query expansion techniques to improve recall. • Deployed a zero-cost GenAI chatbot powered by DeepSeek LLM via OpenRouter, producing citation-backed, hallucination-resistant answers, and validated the pipeline’s economic and technical feasibility through performance benchmarking.