They are doing around 3 interviews and sending 1 assignment that relates to job which you will be doing and 1 test that includes logic and math questions. Please keep in mind that it was 3 years ago. Maybe it has been changed since then.

You will have 2 interviews first and later they send out an assessment similar to what you will be doing daily. They will also send a logical reasoning test which is a bit long. You will have a last interview in the end.