Thakol Nunthirapakorn holds the position of Chairman of Harn Engineering Solutions Public Co. Ltd.

He is also Assistant Professor at Kent State University (Ohio), Assistant Professor at Mississippi State University, Professor at Youngstown State University and Council Director at Thongsook International and on the board of 5 other companies.

In the past Thakol Nunthirapakorn occupied the position of Dean at the University of The Thai Chamber of Commerce.

He received an MBA from Northeast Louisiana University, an undergraduate degree from West Liberty State College (West Virginia) and a doctorate from The University of Arkansas.