After completing a data science multiple choice test which was very similar to Andrew Ng's Machine Learning course quiz questions, I had an interview with HR. The interview was two weeks later. It was 15 minute phone interview and she asked me about my background and why I am interested in such position.

First, there was a short phone interview with the HR. afterward, she sent me a link to a multiple choice test (10 test for half an hour) with general questions in machine learning, regression etc. After passing the test, there was another phone interview with two data scientists. They asked me to explain one of my former project and they ask multiple questions in detail. Then they invited me for the on-site interview. The on-site interviews had three parts. In the first part, they asked me to present a paper which they sent me 3 days before and they asked questions about it. afterward, there was two other interviews with two data scientists each. Each group introduced a questions and we tried to solve (e.g. one ML question which was solved by logistic regressions) etc.