He previously held roles including global chief executive of Naked Communications and vice-president, global agencies and accounts, at Microsoft.
Dunmall will be responsible for Media iQ’s agency and client partnerships globally. He will join in January and take a seat on the board, reporting to Media iQ’s co-founders, Gurman Hundal and Lee Puri.
Puri said: "Richard is a proven leader who has unrivalled experience in leading companies and scaling businesses commercially. We are delighted to bring on board an executive of Richard’s calibre."