Flatin joined the company a year ago as global president and has led several initiatives with chief operating officer, Daniel Ordoñez.
These include simplifying the company’s organisational structure, driving cost and resource efficiencies across all regions, and instituting a new operating model that sets the stage for future growth, the company said.
Commenting on the new role, Flatin said, "Oatly is a once-in-a-generation company with the teams, purpose, and products that are second to none.
Flatin has extensive experience in managing high-growth brands and leading global organisations.
Before joining Oatly, he worked with Mars for more than 30 years and led the multi-billion dollar growth of the Royal Canin cat and dog food business as its global CEO and president.
He also managed multiple global brands as the president of Mars' global chocolate division.
Most recently, he served as president of innovation, science, technology, and Mars Edge, a new entrepreneurial segment of Mars.
Flatin succeeds Toni Petersson, who will transition to the role of co-chair of the board of directors.
"Jean-Christophe is a proven leader and the ideal person to help usher Oatly in our next phase. He has already strengthened our company for the better by putting our supply chain back on firmer footing, renewing our focus on innovation, and enabling our organisation to go on offence to drive profitable growth," Petersson stated.
In his new role, Petersson will support Flatin during the transition period and focus on strategic initiatives, including advising on Oatly’s China business and championing Oatly’s company culture and vision.
Eric Melloul, co-chair of the board of Oatly, said, "For over a decade, Toni has led Oatly with tremendous vision, leadership, and commitment, all of which propelled Oatly from a niche, local brand to a global force leading the plant-based movement. I am thrilled to partner with him as co-chairman."