Team

Tetsushi Hisata
Tetsushi Hisata
Founder of Speee Inc. In 2007, he founded Speee and became the CEO. In 2011, replaced the representative to concentrate on creating new businesses. In 2018, founded Datachain Inc. and is in his current position.
Jun Kimura
Jun Kimura
Executive officer of Speee Inc. He was CTO of Momentum Inc. which develops Japan's first ad-fraud-proof technology. In 2017, after selling the company to KDDI group company, he joined Speee and launched Datachain.
Toshihiko Okubo
Toshihiko Okubo
Engaged in designing and developing ad-tech products at Speee Inc and IT-based rapid-growing companies. he has been designing and developing the entire server side since Dtachain is established.
Ryo Sato
Ryo Sato
Engaged in statistical analysis and machine learning projects for optical instruments and life informatics at a software development company. At Datachain working on product design and implementation of blockchain products.
Masanori Yoshida
Masanori Yoshida
After engaging in research and development at Hitachi, Ltd., engaged in operation and development of online securities services in the GMO group. At Datachain, engaging in research and development of blockchains scaling solutions such as Plasma.
Yuki Hisamatsu
Yuki Hisamatsu
After joining in Speee Inc. engaged in the construction of recommendation logic and optimization logic as a data scientist. At Datachain, he is involved in product design and development direction as a product manager.
Koji Matsumiya
Koji Matsumiya
At MicroAd, led the team as a scrum master and tech lead, and engaged in server-side and streaming processing infrastructure development for the ad platform. At Datachain, engaging in server-side development.
Motoki Yoshida
Motoki Yoshida
After working at an educational startup, he was involved in launching multiple businesses at Cyber ​​Agent as a Representative of ad tech products. At Datachain, engaged in business planning, recruitment and public relations.
Daiki Ishikawa
Daiki Ishikawa
After working as Director of Cyber ​​Agent Advertising Business Division, Director of Joint Venture Company, Vice President of Indonesia Advertising Business Company, Participated in Datachain and engaging in all sales as a sales manager.
Keiichi Koga
Keiichi Koga
At IBM Japan, led global AI / DX projects as a project manager. After participating in Datachain, engaged in project management and business development.
Susumu Toriumi
Susumu Toriumi
After completing a PhD (Information Science and Engineering), engaged in strategy development and new business projects for a wide range of clients such as consumer goods, logistics and insurance at the Boston Consulting Group. At Datachain, he is involved in business development and strategy development.

Contact Us