Tomomi Yamada is Director since 2025 and Senior Managing Executive Officer and President of Overseas Business Division since 2026. He oversees oil and gas producing assets in Iraq, Indonesia, Russia, Norway and USA, and leads E&P and Carbon Neutral (CN) business development in the same areas. He has over 40 years of work experiences on and around oil and gas E&P, which includes initiating Japex’s overseas CN business development (2020-), technical vice-presidency in steam-assisted gravity drainage (SAGD) project of Canadian oil sand (2017-2020), general management of a producing asset in Iraq (2013-2017), taking a command of Japex's reservoir-engineering team over a number of reservoir characterization and IOR projects (2002-2013) and supervision of production operations on an oil field in Oman (2000-2002).

He previously served as an Associate Editor of SPE Reservoir Engineering & Formation Evaluation (2011-2015) and a Board Member of Reservoir Engineering Research Institute, California (2010-2013), and chaired technical sessions at a number of international conferences including those of SPE and WPC.

He is a recipient of 1992-1993 Rotary International Scholarship and 2009 SPE Distinguished Technical-Editor Award and holds B.E. from University of Tokyo and M.S. and Ph.D. from Stanford University, all in petroleum engineering.