Yeah, big data crunching pervades basically everything Google does. I joined Google as a UI SWE (basically a webdev), and find that most of my daily work nowadays involves processing large amount of data to come up with new features. I suppose I made a conscious effort to move back in the stack to more algorithmic back-end work, but even if you stick with UI work, the launch process is so data-driven that you almost need to have a basic familiarity with statistics & data processing.