Snapchat’s 1st product manager succeeds Nikita Bier as X project lead

X has appointed Peter Sellis, Snapchat's first product manager, as its project lead after Nikita Bier stepped down in August 2026. "We are 20 years in...but it truly feels like X's next chapter will be our greatest," Sellis said. Sellis, who wants to make X more useful for creators and users, has also served as head of product at Discord.