Stoyan Stefanov is a Facebook engineer (a former Yahoo!) and an author, contributor, and tech reviewer of various O'Reilly books. He speaks regularly about web development topics at conferences and on his blog at www.phpied.com. Stoyan is the creator of the smush.it image optimization tool, YUI contributor and architect of Yahoo's performance optimization tool YSlow 2.0.phpied.com @stoyanstefanov
Software is changing the world; QCon aims to empower software development by facilitating the spread of knowledge and innovation in the enterprise software development community; to achieve this, QCon is organized as a practitioner-driven conference designed for people influencing innovation in their teams: team leads, architects, project managers, engineering directors.