I've been with Pinterest since the early work-out-of-an-apartment days and am now CTO at Reddit. There's been a feeeew cultural and technological challenges we've had to conquer in the process of building companies from a few employees to 600+ and from a few thousand users to tens of millions. In this talk, I share several important inflection points as a company scales, and talk about the cultural and technological pieces you should have in place. For instance, at what point do you bring in technologgies like logging, map reduce, etc? How about SOA? How do you fix trust issues in the team? How do you balance making some engineers managers versus others? Come with questions!