Before going into details of the interview, two things:
* They recruit globally and offer very high salaries compared to the averages in many regions. Therefore I'm sure they get huge number of applications from unfit people who have nothing to lose.
* They seem to be a software (repair) factory with an overtime culture.
The interview process reflects both of these. The process is largely automated and rewards those who can quickly assess a completely unknown piece of work, judge it and forget it.
The process is very clear, they show the steps in advance
1. Four questions, whether you really have the required experience. I answered no to one and still passed.
2. CCAT (Criteria Cognitive Aptitude Test). If you have never taken it, do a practice run on a free online test, to realize just how quickly you have to answer.
3. Language test. You have to be able to remember and repeat increasingly complex sentences.
4. Online programming challenge on a platform, with webcam and the screen sharing enabled to prevent cheating.
Up to this point no human was involved in evaluating your skills (except maybe reviewing the video feed).
5. "Real Work". This seems to be copied from their Software Engineering Manager tests, look those up. They tell you you have 2 hours, but the countdown starts from 3. (I guess if it takes you more than 2, you can expect to do some overtime later on.) Two kinds of work:
* Code review: A developer proposed an _incorrect_ solution to some issue, you have to spot the error, and come up with correct fix.
Although the job description doesn't mention front/back/fullstack role, this test was almost exclusively front-end.
* Root cause analysis: Someone created an _incorrect_ analysis of a production issue, you have to spot the error.
You will probably need more context, info about the product, etc. but you cannot ask them.
This is the first excercise that will be evaluated by humans. You'll not get a detailed review, just a pass / fail. Some people may be upset about this (at this point you probably invested 6-8 hours).
6. After this you would get to talk with some people, and probably get an offer.