Subrata Das is Principal AI and Data Scientist and part-time Gen AI professor, with experience across machine learning, deep learning, reinforcement learning, NLP and generative AI. He takes a practical, stakeholder-focused approach grounded in strong theory, delivering AI and data solutions across finance, healthcare, law, ecommerce and defense. Previously, he held senior roles including Chief Data Scientist and AI Lab Manager at Xerox and worked as a consultant at MIT Lincoln Laboratory. He has led research programs in data fusion and analytics funded by DARPA and NASA. He currently teaches graduate NLP and Gen AI courses at Northeastern University and is the author of multiple books on AI and analytics, contributing through teaching, writing and seminars.