He said on Tuesday that Facebook Inc financial technology executive David Marcus is leaving the social media company at the end of the year to start working on something new.
Marcus had been overseeing Facebook's efforts to develop a digital currency known as Diem and a wallet app called Novi, and his departure adds to challenges for the fintech unit. He said that his colleague Stephane Kasriel would take over.
Marcus said in a Facebook post that there is still so much to do after launching Novi, and I remain as passionate as ever about the need for change in our payments and financial systems.
Mark Zuckerberg, Chief Executive, said: "We wouldn't have taken such a big swing at Diem without your leadership and I'm grateful you've made Meta a place where we can make those big bets." Marcus joined Facebook in 2014 from PayPal and ran the company's Messenger chat service before moving to work on the financial tools.
Facebook, which was rebranded as Meta Platforms Inc last month, stepped back plans for Diem after regulators worried the service might gain too much control over the money system, allow crime and harm users' privacy.
The aim of the project, previously known as Libra, is to create a stable coin that is pegged to the dollar to avoid the volatility that makes other cryptocurrencies difficult to use.
Facebook has begun testing Novi in Guatemala and the United States, allowing transfers of the stable coin Pax Dollar. Some U.S. lawmakers last month said Facebook can't be trusted to manage cryptocurrencies, and they urged the company to discontinue the test immediately. Facebook is looking forward to engaging with the lawmakers.