Shogo Okada has received the Ph.D. degree in science from Kobe University, Kobe Japan, in 2011. He worked at KOBELCO Research Institute INC, Kobe Japan, as a researcher in 2011-2014. In 2014, he joined KEK-CRC, Tsukuba Japan, as a Postdoctoral Research Fellow and dedicated developing GPU Monte Carlo radiation simulator based on Geant4 for medical and biological application, named MPEXS and MPEXS-DNA, collaborating with SLAC, Stanford University, and CENBG. In GTC Japan 2016, he made a presentation about a CUDA implementation for radiation simulation at DNA cellular level at the poster session and received the NVIDIA award. In 2017, he started working at Kobe University as an assistant professor. He continues developing GPU applications running on the MPEXS framework.