January 1998 | Prepared medical related tax returns and provided consultancy services mainly for hospitals and clinics at a certified public accountancy firm in Chiyoda-ku in Tokyo |
April 2003 | Founded Kojiro Kojima Tax Accounting Office in Ota-ku in Tokyo |
April 2006 | Relocated office to Naka-ku in Yokohama |
January 2011 | Appointed as a partner at a tax accountancy firm in Chiyoda-ku in Tokyo |
January 2015 | Appointed representative of Harumi Partners Tax Accounting Firm |
January 2015 | Representative employee, Harumi Partners Tax Accounting Firm |
April 2015 | Representative director, Medical Practice Successors Association |
April 2015 | Auditor, Japan Rhythmic Gymnastics Federation |
December 2016 | Registered intermediary, Japan Football Association |