Samaha (pictured) joins Dunnhumby from loyalty tech company Reward, where he has been chief executive for the past three years. The company was recently acquired by Rezolve AI.

Prior to that, Samaha led Australian fintech business Prezzee, and was also previously executive vice-president of consumer engagement services at Mastercard, leading loyalty, media and data-driven consumer propositions.

At Dunnhumby, which is owned by Tesco, Samaha will lead the business to scale and strengthen its role in supporting retailers and brands to make more informed decisions.

Bottomley has decided to step down after three years as chief executive and will remain with the company until mid-July for a handover and transition period.

Ken Murphy, Tesco Group chief executive, said: “Josh has played a pivotal role in growing Dunnhumby during a period of rapid technological change.

“He has strengthened partnerships and expanded our impact worldwide, grown Tesco Media into an award-winning media business and laid the foundations for long-term, scalable technology innovation. Josh leaves the business well-positioned for the future, and I’d like to thank him for his significant contribution.”

Murphy said: “We are delighted to welcome Jamie as the new chief executive of Dunnhumby. His strong track record of commercial execution combined with his experience at the intersection of data, loyalty, media and customer engagement makes him ideally placed to build on the progress of recent years and scale Dunnhumby’s impact for retailers and brands globally.”