



Graduated from Sophia University, Faculty of Economics, Department of Economics (Tokyo, Japan)
Certified public accountant
Company registration
License acquisition
Accounting and taxation
Management consulting
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At a major telecommunications company (currently KDDI Corporation), where I joined as a new graduate, I was in charge of sales of communication lines, systems, and solutions for corporations.
I worked as a certified public accountant at a major auditing firm (PwC Arata LLC) for three years, engaging in statutory auditing, advisory work, IPO support, etc.
Changed to a department at a major internet company (Rakuten, Inc.) that planned and managed overseas expansion. After being involved in the establishment, start-up, and business management of several European subsidiaries, I worked for approximately three years as the general manager of finance and accounting in the establishment of a regional headquarters in Luxembourg, a small European country.
After that, I returned to Japan and worked as a business manager at a robot venture, before opening Kazutoshi Yokoyama Certified Public Accountant and Tax Accountant Office in March 2017.
In 2018, I established the YOKOYAMA KAIKEI GROUP group corporation in Tokyo and Ho Chi Minh City and became the representative.
1998: Graduated from the Faculty of Economics, Sophia University
1998-2005: Worked for 7 years at International Telecommunications Company (now: KDDI Corporation) as a sales representative, engaging in sales activities for networks and solution services
From 2008: Worked for 3 years at Arata Audit Corporation (PwC Group) in audit and advisory services
2012-2016: Worked at Rakuten, Inc., responsible for formulating overseas expansion strategies and managing European subsidiaries
2014-2016: Stationed in Luxembourg, served as Financial Controller at the regional headquarters, establishing financial and accounting operations
2016-2017: After serving as the management head at a robotics startup, became independent and established Yokoyama Certified Public Accountant & Tax Accountant Office
2018: Established group companies in Tokyo and Ho Chi Minh City