Bertish will work closely with Raymond Kieser, the managing director of JWT Cape Town, and will be reunited with JWT's chief creative officer worldwide Craig Davis, who was formerly a regional creative director for Saatchis.
He has been with Saatchi & Saatchi for four years, during which time the agency topped the Cape Creative League.
Conn has been described as a "sensational talent". Before joining Saatchi & Saatchi, he was a senior writer at Ogilvy & Mather in Cape Town. His work has won awards at D&AD, Cannes, One Show and the Clios.
"JWT's recent repositioning has signalled a new momentum at the agency and I want to be a part of it. I am definitely up for a new challenge. That's what gets me up in the morning. Look out, here comes JWT Cape Town," Bertish said.
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