Joan Santoso is a Google Developer Expert in Machine Learning, AI/ML Surabaya (previous was Tensorflow User Group Surabaya) Lead Organizer, and Google Developer Group Surabaya Co-Organizer. He is also a Director of the Research and Innovation Center at the Institut Sains dan Teknologi Terpadu Surabaya (ISTTS) in Indonesia. His research is focused on machine learning for natural language processing and knowledge engineering.