Joost Dop, Project: Worldwide’s EMEA chief executive, will assume the responsibilities of managing director for GPJ UK as the company begins its search for someone to fill Vallee’s role.
Dop said: "I would like to thank Olivier for his important contribution to the business over the past few years. We wish him well for the future.
"GPJ has a strong management team which is very capable of running the business in the interim while the search for a new MD is under way. Our strategy is to maintain our position as one of EMEA’s leading experience marketing agencies and this key management role is integral to those ambitions."
Vallee stepped into the role in March this year, and started at the company in 1999. He has held various positions including senior account director, global account director, vice president of operations and vice president, commercial director.
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