Vitoon has been working with the Thai organic movement and fair trade since 1991. He is the founder of many key organizations such as Green Net Cooperative, Earth Net Foundation, Organic Agriculture Certification Thailand (ACT), Thai Organic Trader Association (TOTA).

Besides working in Thailand, Vitoon is also active in Southeast Asian region where he works as a consultant on various aspects of organic agriculture and fair trade. Since 2017, he serves as the chairperson of ASEAN Organic Federation.