Prior to joining PubMatic, Yosuke led comScore Japan KK where he spent four years expanding its operations and increasing the brand awareness and customer portfolio. He joined comScore from Yahoo! Inc. from Overture Japan KK (later acquired by Yahoo! Japan) in 2005 and later transitioned to Yahoo! Inc.'s APAC operation in 2007. During his time at Yahoo! Inc. Yosuke increased efficiencies and operations through working with major global ad agencies and brands.