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avatar for Stoyan Stefanov

Stoyan Stefanov

Facebook
Software Engineer
Stoyan Stefanov is a Facebook engineer, ex-Yahoo, architect of the YSlow 2.0 performance tool and creator of the smush.it image optimization tool. He's the author of the books "JavaScript Patterns", "Object-Oriented JavaScript", and "React: Up and Running". Stoyan blogs at phpied.com and has spoken at conferences and meetups around the world (Velocity, JSConf, OSCON, Web Directions, Fronteers...). He spends his offline hours biking around the beach and making music (rarely at the same time though).