MAC DDB Qatar, the advertising agency in the State of Qatar, has announced the appointment of David Crisp as Chief Executive Officer. David began his career at J. Walter Thompson (JWT) in London working on some of the world's most famous brands such as Nestlé, Kellogg's, Rolex, Kit Kat, After 8, Smarties, National Westminster Bank, Sunsilk, Timotei, Lux and Pear's Soap among others.