Started his career in 1981 as a research engineer at Japan National Oil Corporation in charge of CO2 EOR and reservoir characterization. His experiences include secondment to ZADCO Abu Dhabi (1992-96) and a manager of production department (1999-2004). Joined INPEX in 2004, appointed a General Manager of Technology Development and Services Unit (2008-2011), then a Director of Subsurface division for the Ichthys LNG project in Australia (2011-17). He is currently a Fellow of Technical Division in Tokyo since June 2017. He holds BS and MS degrees from Tokyo University and a PhD degree from Stanford University all in petroleum engineering.