Gregory joined Criteo in January 2010 as Sales Vice President in charge of international development. His success in opening 12 new markets in only 12 months led him to the position of Managing Director for France, Southern Europe and Latin America in January 2011. Prior to joining Criteo, Gregory held positions at Yahoo! France and Aegis Media. In 2015 Gregory became the EVP of EMEA, leading Criteo's overall strategy in the region.