Stefanov, Stoyan

Stoyan Stefanov (http: //phpied.com, @stoyanstefanov) is a Facebook engineer. Previously at Yahoo! he was the creator of the smush.it online image optimization tool and architect of YSlow 2.0. performance tool. Book author (JavaScript Patterns, Object-Oriented JavaScript), contributor (Even Faster Web Sites, High-Performance JavaScript) and speaker (Velocity, JSConf, Fronteers, Ajax Experience).