He replaces Nick Bell, who left at the end of last year and has subsequently joined The Brooklyn Brothers in a senior creative role.
Learman will initially oversee all the Wall’s and Lipton work produced by Adam & Eve/DDB in London, where he will be based.
His hiring marks a return to DDB – he worked at the then BMP DDB, alongside his partner Brian Fraser, until 2004 on campaigns for clients including Volkswagen, Budweiser and Vodafone.
The pair left to join McCann London and became joint executive creative directors in 2005 after the departure of Robert Campbell. They left McCann five years later.
Ben Priest, the executive creative director at Adam & Eve/DDB, said: "His background and experience make him perfect for this role."