Facebook today named its Vice President of Engineering Mike Schroepfer to the role of chief technology officer, a position left vacant after Bret Taylor departed in summer 2012.

The announcement was made internally by CEO Mark Zuckerberg and first reported and confirmed by AllThingsD. Schroepfer will join top executives Zuckerberg, COO Sheryl Sandberg and CFO David Ebersman. There is no word on any changes with Director of Engineering Mike Vernal or Director of Mobile Engineering Cory Ondrejka, who helped lead in Taylor’s absence.

Facebook lost some directors and long-time employees in the months following its initial public offering in May 2012, but Schroepfer’s promotion helps ensure the veteran stays on to lead during the next phase of the company’s history. Schroepfer came to the company as director of engineering in 2008, after holding a VP of engineering role at Mozilla.

See this week’s other Facebook hires here.