He held various senior management positions in Bangkok Bank before being appointed president in December 1994 and has been a member of the board of executive directors since 1992.

Chartsiri received a bachelor's degree in chemical engineering from Worcester Polytechnic Institute.

[3] The bank has more than 300 international branches in 14 economies, including fully owned subsidiaries in China, Indonesia and Malaysia.

[4] Along with its successful commercial operations, the bank is also a strong supporter of Thailand’s community and plays an active role in a number of social development and educational initiatives.

[clarification needed] Chartsiri also served as the chairman of the Thai Bankers' Association from 2002–2005,[5] a member of the Payment Systems Committee of the Bank of Thailand, and a member of the committee of the Thailand Board of Investment.