Mitsuhisa Sato received his M.S. degree and Ph.D. degree in Information Science from the University of Tokyo in 1984 and 1990. Since 2001, he has been a professor of Graduate School of Systems and Information Engineering, University of Tsukuba. He served as Director of the Center for Computational Sciences, University of Tsukuba from 2007 to 2013. In October 2010, he was appointed the research team leader of the programming environment research team at the Advanced Institute of Computational Science (AICS), renamed to R-CCS, RIKEN. Since 2014, he has worked as a leader of architecture development team in the FLAGSHIP 2020 project to develop the Japanese flagship supercomputer “Fugaku” at RIKEN. In 2018, he was appointed a deputy Director of RIKEN Center for Computational Science. He is a Professor (Cooperative Graduate School Program) and Professor Emeritus of University of Tsukuba.