Hiroki has a Bachelors of Arts from Rikkyo University's College of Business (formly the Faculty of Sociology). While studying he ran his own business and belonged to Professor Scott Davis' research laboratory. After graduating, he joined the real estate developer, Cosmos Initia Co., Ltd., and engaged in the asset management business for wholesale real estate. From there, Hiroki joined LIFULL Co., Ltd., (formerly Next Co., Ltd.) a company that operates the real estate portal known as HOME'S, and was involved with planning, development, and business and promotion strategy of related IT services. Hiroki co-founded tsukuruba with Masahiro in 2011.
Masahiro has a Master of Architecture and Building Engineering from the Graduate School of Tokyo Institute of Technology, and studied under the Architect, Mr. Yoshiharu Tsukamoto. After graduating, Masahiro joined the real estate developer Cosmo Initia Co., Ltd. Later he worked for a museum design firm as a spatial and interior designer for museum exhibitions and event spaces through the use of digital devices. Then, after working at an environmental NPO, he co-founded tsukuruba with Hiroki Murakami in 2011. He currently designs places that combines design, business, and technology.
Along with a Ph.D. in Engineering from Tokyo Institute of Technology, Hiroshi has an MBA from Université Paris-Dauphine in partnership with IAE Paris Sorbonne Business School and the Renault Foundation. After working for Corporate Directions Inc., Hiroshi joined Deloitte Tohmatsu Consulting in 2012, moving to Deloitte Consulting Southeast Asia in 2014. His main areas of focus were due diligence and PMI projects related to the overseas expansion of Japanese manufacturers and trading companies, creation of new businesses, and acquisitions. Since 2016, he has been a member of tsukuruba's Management Planning section. After serving as the General Manager of Corporate Planning and Finance & Accounting Department, he became COO and General Manager of Corporate Planning in 2018.
Ryohei joined KPMG AZSA LLC, (formerly Asahi & Co.) in 2003 and registered as a Certified Public Accountant in 2007. After conducting various accounting audits, financial due diligence, and supporting IPOs, he joined STAR FESTIVAL INC., in 2013. He served as CFO and Corporate Auditor of the company, and played an important role in the company's fund raising. Ryohei then joined Faurecia Inc., in 2016 as General Manager, building the company's personnel and internal control system. In 2016, after serving as an external Corporate Auditor of tsukuruba he became CFO and General Manager of the Finance and Accounting Department in 2018.
Shinichi is a Graduate of Tohoku University's Faculty of Law. After working at Recruit Co., Ltd., in Personnel and Public Relations (directly under the founder, Mr. Hiromasa Ezo), he was transferred to Cosmos Initia Co., Ltd., (formerly Recruit Cosmos Co., Ltd.) to work on its IPO project. There he served as a manager in the real estate distribution and leasing business, concurrently being the Group Strategy Office Manager and General Manager of the HR Group. He played a central role in the company's IPO, created a management department, made the real estate leasing business profitable after the burst of Japan's bubble economy, and contributed to Japan's first business revitalization ADR (Alternative Dispute Resolution) after The Great Recession (The Financial Crisis of 2007-2008). In 2010, he joined Gyosei Corporation and reorganized the company as Corporate Officer and General Manager of the headquarters of management during a long-term decline in sales and profit. After leaving Gyosei in 2015 Shinichi became a Non-Executive Director of tsukuruba.
Keiko graduated from Keio University's Faculty of Law. After working for corporate sales and as a stock researcher at financial institutions such as Mizuho Bank (formerly Fuji Bank), JP Morgan Securities, and BNP Paribas, she joined Ernst & Young ShinNihon LLC. She conducted accounting audits for listed and/or foreign-affiliated companies and later opened the Keiko Hattori Certified Public Accountant Firm. She is a Certified Public Accountant in Japan and Delaware, USA and joined tsukuruba as a Corporate Auditor in 2016.
In 2008, Yusuke joined Google Inc., and was in charge of product advertisement. He joined the team that founded FreakOut Holdings Group Inc., (formerly FreakOut Inc.) in 2010. He was also a Director at Ignis Ltd., helping the company to go public in 2014. In 2018, he merged Coiney Inc. with stores.jp, inc. and established hey, inc. He has served as tsukurba's advisor since 2015 and became an External Corporate Auditor in 2018.
Keiko became a registered lawyer at Mori Law Office in 2008. In addition to working in the fields of construction, real estate, and casualty insurance, etc., she is a member of the JFBA Housing Dispute Settlement Agency Examination Committee, the Hokkaido Housing Reform and Dispute Settlement Center Management Committee Executive Secretary, a Corporate Compliance Committee Advisor, and an Ethics Review Committee Appointed Auditor of Star Festival Co., Ltd. Keiko became an External Corporate Auditor for tsukuruba in 2018.