Nunu is the CEO of Ogilvy South Africa and Chairperson of Zoom Advertising. She is one of the most senior women in advertising and responsible for the overall management of the group. Until recently, she was the Chairperson of the Association for Communication & Advertising.

Awarded the Financial Mail/AdFocus "Agency Leader of the Year" award, she is also one of five women nominated for "Business Woman of the Year".

With an MBA from Morgan State University in Maryland, US, and starting at O&M as an Account Manager in 1988, she has also worked as the acting GM of SA Tourism, Communications Director of Nike SA and as Client Service Director at Herdbuoys.