At Facebook, we believe in particularly small teams. Most projects are about six or seven total…
Our team structure:
There’s always a designer. Product designers at Facebook are responsible for visual design, for interaction design, also for what we call product design, which is essentially product strategy, and we even do some front-end implementation as well.
There’s almost always also a researcher. This wasn’t the case two years ago when I started at Facebook. Researchers were involved in some projects, only the biggest, but not a lot of them. But over the past two years, I’ve seen us grow to accept the importance of both qualitative and quantitative research, so this is now an integral part of our team.
We also have an engineer, usually between one and four.
And then product managers. Product managers at Facebook are responsible not just for project managing, not just for making sure things ship on time, that everybody has what they need, but also for the quality of the product. They’re sort of like mini-CEOs within their projects usually.
— UX Week 2010 – Adam Mosseri