Had a 20 minute phone interview with Human Resources to determine my general knowledge and fit within the company. Was brought in months later once there was an opening and had a 2 hour interview where I met 1:1 with 5 different people. Some were welcoming and others more abrasive. I interviewed with 2 different teams/accounts.

Fairly extensive process, you speak with HR, then you speak with at least three if not four or even five people in a series of three-ish interviews. For scheduling, they're pretty quick but you're at the mercy of the interviewers' schedules.