Mr. Okamoto graduated from Waseda University in Tokyo in 1983 with a master's degree in Science/Chemistry. He joined Sony Corporation in 1989 as a systems engineer.

In 1992, he became involved in Sony's computer entertainment project, which soon became Sony Computer Entertainment Inc.. There, he managed three engineering units as the Director of Development responsible for creating the OS, the development environment and technical support for the very successful game console, “PlayStation.” This success catapulted Sony Computer Entertainment Inc. into one of the most prominent companies in the Sony Group. In April 1999 Mr. Okamoto became the Senior Vice President of R&D and played a key role in the development of PlayStation2. Between April 2001 and August 2002, he took over the position of Chief Technology Officer supervising R&D and Broadband and Business division.

In April 2001, Mr. Okamoto became the Chief Technology Officer at Sony Computer Entertainment. He primarily devoted his efforts on supervising R&D and the Broadband and Business division until August 2002, and since then has been focusing on OS development and distributed computing technology for the 3rd generation system, further exploring the possibilities of the PlayStation business worldwide.