Submitted application through a referral in October 2019. Two days later completed an initial 30-minute phone screen with an HR recruiter. After that, there is a 30-minute phone interview with a sales manager. This interview was much harder and there was a 2-minute sales pitch portion of the call. The third round was 2 back to back 45-minute in-person interviews as well as a tour around the office. Heard back that I had received an offer 2 days after final round. Overall a very professional interview process.