From 2000 to 2004, he was a Researcher with SLS Group, TIMA Laboratory, Grenoble, France.,From 2004 to 2008, he was a Senior/Principal Engineer with System LSI, Samsung Electronics, Suwon, South Korea. From 2008 to 2015, he was an Assistant/Associate Professor with POSTECH, Pohang, South Korea. In 2015, he joined Seoul National University, Seoul, South Korea. His current research interests include memory/storage subsystem and software/hardware optimizations for deep neural networks including network compression, quantization, and hardware accelerators.