Hardik Nahata is a Staff Machine Learning Engineer at PayPal, where he is spearheading the development of the AI/ML platform infrastructure for real-time, AI-driven shopping experiences, serving millions of PayPal merchants globally. With expertise in Generative AI, Personalization, and Natural Language Processing, he specializes in building scalable machine learning systems that power intelligent automation at scale. Previously, he played a pivotal role at Chegg, where he developed multi-agent LLM systems and Retrieval-Augmented Generation (RAG) architectures to enhance student learning engagement. His work spans cutting-edge applications such as conversational AI, personalized learning pathways, and real-time AI models that drive meaningful user interactions. Beyond his contributions to FinTech and EdTech, Hardik's experience extends across Healthcare and Supply Chain industries, where he has built recommendation engines, NLP-driven content optimization models, and AI solutions that enhance operational efficiency and innovation. Hardik holds a Master’s degree in Computer Science with a specialization in Artificial Intelligence. Recognized as a Top 1% AI/ML Mentor on TopMate, he combines deep technical expertise with real-world industry perspectives, guiding aspiring and experienced professionals as they navigate the evolving landscape of artificial intelligence.