Had 2 phone interviews after I submitted my application online. The calls were over 1 month, and asked some questions that tested the skills I mentioned on my resume. They interviewers were helpful when I got stuck, and gave me pointers to help my thinking. The questions were quite hard, but preparation and doing your research will definitely help. Make sure you know everything you've mentioned in your resume.

Six rounds of phone/tech interviews over a long time period. It seemed a bit scattered and could have been way more efficient. I felt like some of the interviews got repetitive.