Jean-Baptiste Rudelle graduated from Supélec in 1991 and worked at Enercal, Philips-Lucent and two consultancies. In 1999 he co-founded Kiwee, a mobile games and content site, which American Greetings bought in 2004.
In 2005 he co-founded Criteo with Franck Le Ouay and Romain Niccoli. The company spent about four years on research and launched its first product in April 2008. Criteo shows shoppers ads for products they have just viewed and charges advertisers per click.
Criteo listed on Nasdaq in October 2013 and raised $251 million. Rudelle left the chief executive role in December 2015, launched the carpooling app Less in 2016 and sold it to BlaBlaCar in April 2018. He returned as CEO in May 2018 and handed the role to Megan Clarken in November 2019, becoming chairman.
Criteo paid a €40 million CNIL fine in June 2023. For 2025 it reported revenue of $1.94 billion and net income of $145 million, and announced plans to move to the United States via Luxembourg.