Facebook has hired Mozilla technology veteran Mike Schroepfer as a director of engineering, as part of the social network's recent executive shuffle. Schroepfer, who led the development of the Firefox browser as Mozilla's vice president of engineering, will be one of four directors of engineering at Facebook when he joins the company in the coming weeks.

The Palo Alto, Calif.-based company created the position for Schroepfer to work on its social-network platform and Web site. Facebook is still looking to hire a vice president of engineering to replace former CTO Adam D'Angelo, 23, who left the company this summer.

Schroepfer is the newest executive to walk through Facebook's seemingly revolving door. Mark Andreessen, co-founder of Netscape, joined the company's board of directors in late June. Earlier this year, former Google executives Sheryl Sandberg and Elliot Schrage joined the company, too.

You can read the entire article at CNET News.