After graduating from Tama Art University, Ishii joined SONY in 1992 and he has designed SONY products such as Handycam, Cyber-shot, Walkman. In 2003, Ishii has designed AIBO ERS-7. He resided in design center Europe based in London. Ishii has taken a role as examiner for iF Design Award in 2016. Now he works in SONY headquarter and in charge of design for new aibo born in 2018 and its related new business, mobile phone products, interface, communication designs at SONY’s cutting edge. Ishii has been awarded iF Design GOLD, Good Design Gold, Red Dot Design, and many others.