Executive Search Services Co.,Ltd. Established in November 1992, ESS is a boutique human resources consulting company wholly-owned by a group of local partners, dedicated and commited to serve and fulfill clients' needs. ESS consultants carry the professionalism that Panya Chattanrassamee , its founder and Chair man, has instilled within the recruitment industry in Thailand since 1983. As an independent firm, we have an intimate knowledge of the Thailand marketplace. We offer a personal and confidential professional executive search services, which is seldom possible in many local or multinational recruitment firms in Thailand .