Will Shu, founder of food delivery app Deliveroo, will step down as its chief executive once US rival DoorDash completes a takeover of the British group, a statement said Thursday.

DoorDash in May agreed to buy Deliveroo for £2.9 billion ($4 billion) in a deal expected to be completed at the start of October.

"Taking Deliveroo from being an idea to what it is today has been amazing," Shu said in the statement.

"Today the company's growth and profitability are accelerating and we are delivering on our mission to transform the way people shop and eat, but after 13 years I want to contemplate my next challenge," the American added.

The DoorDash deal will create a delivery service present in more than 40 countries, serving around 50 million monthly-active users.

Deliveroo posted its first

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