After graduating in Architecture, Suthisak Sucharittanonta worked as a Freelance Photographer on magazines. In 1985, he joined Dentsu Thailand as a Visualiser. In 1987 he worked as an Art Director at Lintas Bangkok and joined Ogilvy&Mather Thailand in 1988. At Ogilvy, he worked as an Art Director and a Copywriter until he was promoted to Creative Director in 1992.
In 1994, he was asked to set up an off-shoot agency, Results Advertising, where he won many prestigious awards from Cannes Lions, Clio, One Show, and Asian Awards Best of Show for Black Cat Whisky. He is the most awarded creative in Asia, and ranked No.1 in the Hottest Asian Creative Ranking by Campaign Brief Magazine in 1999 and 2003.
He joined BBDO Bangkok as Chief Creative Officer in 1999, where he won many prestigious awards including Gold Lions, Gold Clio and One Show. and BBDO Bangkok was ranked No.8 in the world by the Gunn Report 2004. He was appointed as a member of BBDO Worldwide Creative Committee in 2004.