Rishiraj Saha Roy is a Senior Researcher (Research Group Leader) at the Max Planck Institute for Informatics (MPII), Saarbruecken, Germany, leading the research group on Question Answering. He belongs to the Databases and Information Systems Department, that is headed by MPII director Prof. Dr. Gerhard Weikum. Most recently, he has zoomed in on using graph neural networks (for leveraging heterogeneous knowledge sources) and deep reinforcement learning (for harnessing user feedback) to build better conversational question answering systems. In general, he is really passionate about applying language technology in and around text-based search. Prior to joining MPII, he worked for one and a half years as a Computer Scientist at Adobe Research. He completed his PhD as a Microsoft Research India PhD Fellow from the Indian Institute of Technology (IIT) Kharagpur, working under the supervision of Prof. Niloy Ganguly (IIT Kharagpur) and Dr. Monojit Choudhury (Microsoft Research). He did his masters' at IIT Roorkee (Roorkee is a beautiul town near Hardwar, India) and his bachelors' at Jadavpur University , Kolkata (also known as the City of Joy!), India. When not working, he can often be found poring over all kinds of word, math, and logic puzzles.