I don't feel sharing the questions would be fair (nor really useful to you). I interviewed for a different engineering position in a different office, so YMMV.
In my case I had to solve an interesting algorithmic problem, do some low level C++ stuff, figure out how to build a simple service but with huge scale and tight performance limitations, talk about linux internals, and discuss ways to monitor services.
Most of these required whiteboard coding, especially the first two. None of the questions were "puzzles" or "brain teasers", they were very fair. The interviewers were great, very friendly and helpful. It felt like a interesting conversation between colleagues, not like an interrogation :)