The interview process was not technical at all - pretty much all behavioral. Lot of questions about your resume, past data project experience, comfort with R and associated packages, and why you're interested. Coming from a Biostats background and knowing the basics of clinical trials + survival analysis is a plus. Screener (around 4 Ph.D level statisticians) => final round (pretty much the whole department - 4 hours meeting close to 14 or so statisticians)