I was interviewed 12 times including the phone interview. Mainly competency based questions. I had to complete 2 tests online, 1 test as part of an interview and complete a presentation. It was a lengthy process, but provided a greater insight into the company as the interviewers were from a variety of departments and functions. Worth it in the end!

Interview process is challenging but expected as everything you need to know is available online. They will schedule you with 4 employees from the team or organization you will work with and 1 completely separated from your organization as a "bar raiser". No need to work to impress one specific person, know 12-14 differentiated STAR formatted stories by memory.