The internal recruiter who identified and contacted me was excellent in all respects: very professional, helpful, diligent, and genuinely trying to identify the best talent for the company. I was given enough information about what to expect from the interview process, how to prepare for it, about the team and its goals as well as the company's recent highlights. And then came the phone screen... The interviewer was very satisfied with my coding skills and told me during the call itself that I finished it faster than other candidates. He then asked me a few questions related to data science and algorithms. For just one of them, I told him that I looked into the mathematics of it about three years back, and so do not have the mathematical details of it on the top of my head, and then gave him an overview of the concepts involved. That was it. I was rejected, for saying that one partially negative thing about myself. In the recent times, many companies are trying hard to improve their interview processes, as was evident in how the internal recruiter handled it. The interviewers are in need of more training still.