1st stage - recruiter call, 2nd stage, task, 3rd stage interview/ chat.
All in all it was easy but you have to fit the box to work for them.
I was interviewed by 2 people but only 1 was in the invite so was surprised to see the another interviewer. Make sure you ask the internal recruiter to tell you exactly who will be attending.
They were very friendly and the HR team kept me up to date with the process. The second interview was a lot harder than the first one, which is something to bare in mind.