Apply on their website -> Phone Interview with HR -> Phone interview with one of their data scientist.
Every interviewer is very nice and patient. They really try to make you understand what they are looking for and be happy to talk with you.
However, this title is not matching who they want to hire. They actually expect a statistician than a data scientist. All the questions are about statistic but not data science, so I am not well prepared for them though questions are pretty easy.