Two phone interviews, one assessment day (three in-person interviews). Phone interviews about 40 minutes each, were fairly standard algorithm questions, one question with live coding exercise online. One Object-Orientated Design question. In person interviews were: one coding interview (on functional programming style map-reduce transforming data sets), one algorithms interview (finding cycle in graph for thread deadlock detection), one systems interview (designing event logging system for large facebook game)

I had behavioral interviews and then 4 in person interviews. The behavioral was straightforward. There was also a data query interview where they taught you a new "language" and had you execute basic queries in it. Then there was a system design interview. I had two of these. The last one they asked me if I was deployed to the moon to identify new species of alien what kind of system would I build.