Hiroyuki Tajima Director / Certified Public Accountant (Japan)
Graduated from university and passed the second CPA exam. Joined EY ShinNihon LLC and engaged in statutory audit services and IFRS implementation support until 2018. Specialized in ASEAN as a CPA and joined a local accounting firm in Thailand. Responsible for about 120 Japanese companies expanding into Thailand.
Appointed as a director of the group’s Indonesian subsidiary in 2020. After completing the term, established AT International Co., Ltd. in Thailand and became a director.
Wichuda Auppamatho（Fai） Director / CPD
Majored in accounting at university with the goal of starting an accounting firm. Gained four years of experience at an accounting firm during university and obtained the CPD qualification.
Worked as a senior accountant at a Japanese accounting firm for three years after graduation. Started an independent business and served as the certified public documenter for numerous clients. Established the third accounting firm, AT International Co., Ltd., in 2023 and became a director.
Partnership
Sawika Siriyotipan（Fon） Certified Public Accountant (Thailand)
Holds a Bachelor of Accounting (B. Acc.), an MBA, and a CPA license in Thailand. Has over 18 years of experience as an auditor, including at Deloitte. Established SS Audit and Consulting Co., Ltd. in 2018, providing accounting audit services to numerous foreign companies.