Reflecting on 3 years at Facebook

After joining, I was most surprised to find that Facebook’s motto of “Move fast and break things” is real. I’ll never forget my second day on the job when Chris Cox, our V.P. of Product, assigned me the task to fix a pretty complex bug in News Feed. I'd never written php in my life, but a few hours later when I got my code working and ready for review, he said "Cool, ship it!" with a big smile on his face. At first I didn't think he was serious, but once it shipped, I realized that I had just pushed out a change on my second day that 25 million people would experience instantly.
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