I had a referral and I heard 90% of all candidates hired are hired thru referrals so I felt my chances were pretty good. I had a phone interview and then went back for a Group / Panel Interview, they called me 2 days later with an offer and I accepted.

Applied through referral program. Was contacted through email to set up phone interview. Phone interview was a simple screening process. Passed the phone interview and set up a face-to-face. The process was lengthy, but fun. Three panels of 2 members of the email and apps team interviewed me, all asking similar questions, nothing too technical.