Chief Executive Officer
After graduating from Waseda University, Shintaro Yamada established Unoh Inc., where he launched various internet services including "Movie Life," "Photozou," and "Machitsuku!". In 2010, he sold Unoh to Zynga. After leaving Zynga in 2012, he went on a trip around the world. In February 2013, he established Mercari, Inc.
After graduating from Waseda University, Fumiaki Koizumi joined Daiwa Securities SMBC, where he managed the IPOs of IT companies including mixi, Inc. and DeNA Co., Ltd. In 2006, he joined mixi, Inc. as Director, Executive Officer, and CFO, and supervised the Corporate Division. After leaving mixi in 2012, Koizumi supported a number of startup companies. In December 2013, he joined Mercari, Inc., where he assumed the role of Director in March 2014. He was appointed as President & COO in April 2017.
Chief Innovation Officer
While enrolled at the Tokyo University of Science, Faculty of Engineering, Yuki Hamada founded CYBRiDGE GROUP CORPORATION and assumed the role of Executive Vice President. At CYBRiDGE, he led software development activities, conducting M&A and launching new businesses. After leaving CYBRiDGE in October 2014, Hamada joined Mercari, Inc. in December 2014. He became a Director in January 2015, and assumed the role of Executive Officer in March 2016. As Chief Product Officer (CPO), Hamada currently manages Mercari's products and AI, data, and search technologies in addition to the R4D research and development organization.
Chief Business Officer / US CEO
John Lagerling holds as MSc in Marketing and International Business from the Stockholm School of Economics and conducted his master’s thesis research at the University of Tokyo, Graduate School of Economics. After spending seven years at Google in various leadership positions, including Director of Android Global Partnerships, in 2014 he assumed the position as Vice President of Facebook, Inc., where he headed global business development, mobile partnerships, and other business partnership initiatives. Lagerling joined Mercari, Inc. as Executive Officer and Chief Business Officer in June 2017, and became a Director in September 2017.
Naoki Aoyagi is the former Executive Director of GREE, Inc. After working at Deutsche Bank, he joined GREE, where he led the company’s pre-IPO financing and managed the IPO as CFO. He also headed business development activities at GREE, including the launch of the company’s game platform. From 2011, Aoyagi was instrumental in GREE’s international business expansion in San Francisco. He held the position of General Director before stepping down from his role as Executive Director in September 2016. He assumed the role of Merpay CEO in November 2017, and the role of Mercari, Inc. Director in September 2018.
Mercari Japan CEO
After graduating from Waseda University, Tamonoki joined GMO Cloud K.K., where he handled CS work, a server hosting business, and the launch of new businesses. In 2010, he began working at Pixiv Inc., where he worked in business supervision, including system development, marketing, and growth, as a company director. He was appointed representative director and CEO of Animate Lab, Inc. in January 2016, and promoted its IT business in the retail field. He joined Mercari as an executive officer in February 2017. He was appointed CEO of Mercari Japan as an executive officer in October 2018, and assumed his current position as director and CEO of Mercari Japan in September 2019.