1. Contacted by recruiter. 2. Intro call with recruiter (just a couple targeted questions based on experience relevant to them). 3. 3hr Hackerrank test with 4 questions (1 easy, 2x medium, 1 hard). I suspect they have a high bar and to pass you probably need to do the easy and the two mediums and at least attempt the hard one. But this is just speculation on my end, they don't really give you an indication which I guess is understandable as this is also meant to see how much you can do. It's doable but my advice is to prep well for these types of time limit interviews.