Applied from LinkedIn, and reached out by a recruiter in two weeks. The recruiter is very nice and helpful. Scheduled the video call two weeks later and go over a case study in 45 mins. Took 10 mins to introduce each other and related experiences. Then the interviewer sent a link to show the question and data attributes. The question is very vague, and you need to define something by yourself. It wasted a lot time to clarify things. If you are familiar with their business, the question is simple, but need some time to think and clarify. The interviewer (a senior data scientist) is kinda arrogant and if you cannot answer the questions quickly then he will give you the answer directly. I also can feel although the interviewer is senior but lack of knowledge about state-of-the-art machine learning models, like representation learning and latent factor models.