I applied online on March 2019. I received a reply a couple of hours after submitting my application explaining the details of the process. There are three steps: 1. take-home assignment, 2. Phone screening, 3. onsite 1-day interview. We agreed when I wanted to receive the take-home for which I was supposed to work approx. 4 hours and I had to hand back within 48h. The assignment is the same that other people have already mentioned here. You need to predict which users will be more likely to make a purchase. They evaluate your job by checking if the list of users you provide matches the one of those who made a purchase. I think they also look at the codes, but primarily they look at the accuracy. One week after sending back my assignment I got an email to proceed to the video call screening (45-60min) with a lead data scientist. During the interview I mainly explained what I did and how. I also talked about previous projects I worked on. Everything seemed very smooth. They finally decided not to invite me for the onsite with a no-reply email. I contacted them for a feedback and they told me that the main reason was my VISA status (I needed a sponsor since I have a H-4).