Jong Wook Kim is currently a doctoral student studying Music Technology at New York University, focusing on music recommendation and music information retrieval. Previously he worked on building real-time recommender systems at Kakao, a Korean internet company serving more than 40 million monthly active users. Prior to Kakao he was an MMORPG server programmer at NCSOFT. He has an MS in computer science and engineering from University of Michigan, and a BS in electrical engineering from Korea Advanced Institute of Science and Technology. He is active in open source communities and has contributed to Apache S2Graph.