Facebook Chief Technology Officer Mike Schroepfer announced on Wednesday that he will step down from his role next year and be replaced by Andrew Bosworth, the head of Facebook’s hardware division.

Schroepfer will transition to a part-time role with the social media giant, which is under immense scrutiny thanks to a series of reports by the Wall Street Journal last week that Facebook intentionally ignores or fails to address multiple significant issues plaguing users across its website.