Aaron Xixuan Feng is a Research Engineer at Megagon Labs Japan (formerly Recruit Institute of Technology). His technical interests include data management and machine learning. Prior to Megagon Labs, Aaron was a committer and contributor for Apache MADlib while he worked at Pivotal. Aaron is a co-author of research papers published in top database conferences including SIGMOD, VLDB and ICDE. Aaron received his M.S. in Computer Sciences at the University of Wisconsin-Madison in 2013. He also studied computer science in Peking University, Stanford University and Hong Kong University of Science and Technology.