Very pleasant atmosphere and responsive HR. Seems they fly you in fairly aggressively. HR's responsiveness made them very apt at making getting me from an initial phone call to an interview quickly.

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.