Thaweesak received his Bachelor and Ph.D. degrees in Electrical Engineering from
Imperial College of Science and Technology, London University, UK. He had a
number of industrial contracts in the UK before he started his government service
career in Thailand. In 1981, he taught in Electrical Engineering at Prince of Songkla
University. In 1983, he joined Thammasat University as the Associate Director of the
Information processing Institute for Education and Development, as well as teaching
in MIS in Thammasat.

In 1987, he co-founded the Advanced Research Group Company Limites (AR Group),
a major publisher and business research on IT subjects in Thailand.
Since 1994, he became a Deputy Director of NECTEC with a mission to lead the
Network/Software Technology laboratories. The Network lab pioneered the Internet
in Thailand by developing the largest academic and research network known as
ThaiSarn. In 1995, he co-founded the first Internet service provider, Internet
Thailand Company Limited. The ISP is the largest ISP in Thailand, with 45% market
share by IP numbers managed in 1998.

During 1996-1997, Thaweesak led Thailand's SchoolNet Program and the
Information Superhighway testbed project at NECTEC. SchoolNet is the backbone of
the school informatization program which provide free Internet access across the
Kingdom since 1997. In August 1998, he was promoted to the Director of NECTEC
to lead the national body for R&D programs in IT. He also served as the executive
secretary of the country's IT planning body: the National Information Technology
Committee (NITC).

In May, 2000, he received the decoration "The Companion of the Most Illustrious
Order of Chula Chom Klao" from His Majesty the King.
Thaweesak published more than 10 books and 130 papers and articles (in Thai and
English).