Dr. Somchai Sujjapongse served as Director at PTT PCL since November 1, 2015 until May 1, 2018. He served as Director-General of Thai Customs Department at Ministry of Finance from 2009 to 2010 and its Director of State Enterprise Policy Office from 2010 to 2011, Director of Fiscal Policy Office from 2011 to 2014 and Director-General of Thai Customs Department from 2014 to 2015. He has been Permanent Secretary of Ministry of Finance since 2015. He served as Director and Chairman of Krung Thai Bank Public Company Limited until May 1, 2018. He served as Director of Thai Airways International Public Company Limited. He holds B.A.in Economics (Hons.) from Chulalongkorn University, Thailand; M.A. in Economics of The Ohio State University, USA and Ph.D. in Economics from The Ohio State University, USA.