John O'Brien

John began his career in the semiconductor industry and held various positions in technology, marketing, and engineering before becoming CEO of what was S3 Group in 2001.

In 2006 he led a management buyout of S3 Group from Philips. The buyout was financed by ACT Venture Capital. This funding was used to accelerate and develop S3 Group’s activities in digital health, semiconductors, and digital TV.

In 2015 the S3 TV Technology business was acquired by Accenture and in 2018 the S3 Semiconductors business was acquired by Adesto Technologies.

John holds an engineering degree from the University of Limerick, an MBA from University College Dublin, and has completed the Enterprise Ireland Leadership for Growth program at Stanford University.

He spends most of his spare time trying to keep an old Land Rover on the road.