(Reuters) -Uber Technologies ( UBER ) said on Monday the head of its delivery business, Pierre-Dimitri Gore-Coty, is leaving the company after nearly 13 years.

As senior vice president of Uber's ( UBER ) delivery unit, Gore-Coty oversaw the company's Uber Eats business as well as grocery and other on-demand delivery offerings, and is credited with steering the division through the COVID-19 pandemic.

Uber ( UBER ) also announced it has named Andrew Macdonald as its chief operating officer, reinstating the role almost six years after it was eliminated in a leadership overhaul in 2019.

Macdonald, who has been with Uber ( UBER ) since 2012 serving in several leadership roles, will now be responsible for Uber's ( UBER ) mobility, delivery and autonomous businesses. He will also oversee cross-platform functions such as membership and customer support.

"This is a natural next step in our evolution as a company, as we drive growth by increasing engagement across our entire platform," Uber ( UBER ) CEO Dara Khosrowshahi said of Macdonald's appointment.

The moves, effective immediately, come as Uber ( UBER ) has been trying to expand its business portfolio to drive growth amid signs of saturation in its mainstay North American business.

Uber's ( UBER ) delivery business has also been facing stiff competition from rivals such as DoorDash.

Last month, Uber ( UBER ) signed a $700 million deal to acquire a majority stake of 85% in Turkish food and grocery delivery platform Trendyol Go.