He is a founder of Strategos, an international management consulting firm based in Chicago.

The UTEK Corporation acquired Strategos in 2008 in an all-stock transaction as reported by the SEC.

Hamel and Prahalad introduced the idea of "strategic intent" in a 1989 article published in the Harvard Business Review.

[7] The Wall Street Journal ranked Gary Hamel as one of the world's most influential business thinkers,[8] and Fortune magazine has called him "the world's leading expert on business strategy" [9] and Financial Times referred him as a ''management innovator without peer"[10] In 2013, his name was not present on an updated version of the Wall Street Journal list.

[12] As stated by Forbes Hamel ranked number 5 in the 10 most influential business gurus for 2007.