Interviewed with a senior research scientist. Topics covered basic machine learning, Word2Vec, collaborative filtering and applying these models to real world scenarios. The interview went really well such that the interviewer told me I had passed in the interview and could expect to receive a maths test within the next week. However, I heard nothing back. I reached out to the recruiter 3 times and was ignored every time. Since this incident I have applied for the Applied Data Scientist position and been invited to arrange a first round interview. After replying to the email again I heard nothing back. The recruiter at dunhumby is incredibly unprofessional. I have spent a lot of time preparing for the interviews. Why interview if I pass and still don’t get through or at the very least get feedback on why they may have changed their mind?