https://techcrunch.com/2018/07/05/bookchain/

It was already known that Facebook had set up a group within the company to “explore” blockchain tech, headed up by long time Messenger chief David Marcus. However, the latest executive reshuffle appears to point to the social networking behemoth getting more serious about developing on top of blockchain technology.

According to his LinkedIn profile, Evan Cheng, a director of engineering at Facebook, has moved to the position of Director of Engineering, Blockchain. A well-respected “low level” computer engineer, he was previously responsible for heading up Programming Languages & Runtimes at the company, a position he held for nearly three years.