Bacuvier (pictured) was appointed chief executive of Dunnhumby in 2017 and stepped down from the role last month.

The company has appointed Claire Lorains, formerly group innovation director at Tesco, as interim chief executive officer while it carries out an external search for a permanent successor.

Prior to Dunnhumby, Bacuvier held various commercial, product, advertising and product leadership roles at Google.

Jeremy King, chief executive and founder of Attest, said: “Guillaume is the ideal fit for this role at Attest thanks to his experience of building, scaling and evolving businesses with data and consumers at the core, combined with a highly curious, rigorous and thoughtful style.”