Caldwell (pictured) was previously an innovation consultant at Panelbase, and has held senior research roles at Netquest, Research Now, RedSheriff and Nielsen//NetRatings. In his new role at Pureprofile, Caldwell will be tasked with expanding the company’s client base in the UK.

Pureprofile specialises in direct-to-consumer technology platforms, and works in consumer research, data and insights, and programmatic media.

Martin Filz, chief executive of Pureprofile, said: “I’m delighted to have Johnny on the team. Having worked with him for a number of years in previous roles, I know he’s an exceptional individual.

“Not only does he bring extensive knowledge, he’s also one of the best-connected people in the industry, making him perfect for this role.”