Jay Sullivan, a veteran technology executive and Groupon’s chief product officer for the last two years, has left the company.

Sullivan notified Groupon of his decision to resign on Jan. 17, according to an SEC filing. The filing states that Sullivan left “in order to pursue new opportunities” and his resignation “is unrelated to any disagreement with the Company.”

Sullivan joined Groupon in early 2015 as SVP of consumer product. Prior to Groupon he worked for several years in various executive roles at Mozilla, including serving as chief operating officer and interim CEO. Sullivan was named Groupon’s chief product officer in December 2015.

Groupon did not immediately respond to a request for comment.

Sullivan’s departure comes as Groupon has brought in several new faces to its leadership team. In November, the company named Colin Bodell, the former CTO at American Eagle Outfitters, as its chief technology officer. And earlier that month, Groupon announced that Steve Krenzer, the former CEO of Core Digital Media, would join as COO. Groupon also recently added Deborah Wahl, the former CMO of McDonald’s, to its board of directors, and its co-founder Brad Keywell announced he was leaving the board.

Groupon said in the SEC filing that its product management teams will report to Krenzer, who will assume Sullivan’s responsibilities on an interim basis until Groupon finds a replacement.