Robertson has been with Paddy Power for the past 18 years and told The Irish Times that he plans to set up a creative advertising business targeting social media.
“I will be taking a lot of my learnings from Paddy Power and looking to put them into practice,” he said. “The intention is to produce high-quality creative advertising at quite a low cost.”
Robertson will remain at Paddy Power for another six months. He was the first marketing professional recruited by the Irish bookmaker, having been hired by Paddy Power co-founder and then chief executive Stewart Kenny.
His time with the company has involved a number of roles, including as head of communications, head of “mischief”, and head of branding at Sportsbet, Paddy Power’s Australian subsidiary.
In a note to staff on Thursday announcing Robertson’s departure, Paddy Power described him as a “key part of the [company’s] brand magic”.
“Ken is a unique person and filling the void that he leaves will take a special talent, so I’m delighted that he will be around for quite some time to come,” staff were told.
“He will be sorely missed and closer to the time, we will take the opportunity to celebrate a quite brilliant career.”