I went through whole DS interview process but did not get an offer. The process is composed of 5 interviews: 1. Videocall with HR talking about your experience and why you want to work at Nubank 2. Hackerrank questions about data structures and algos. 3. Videocall with a Lead DS talking about DS questions like how to imput missing data, what is the whole process of a DS project, difference between xgboost and random forest. 4. Business Case problem. By far the most difficult one. They put you a real problem that can happen with a DS model like performance dropping and you have to investigate what is happening. 5. Interview with a DS lead talking about your experience and previous DS projects The reason I put a negative review is because it is not very clear why I got rejected or what to improve on. Most of my experience has been as a Data Analyst so I haven't deploy models at work. I applied for a DS position not a Senior position but all the interview was focus on what models I have deployed/worked on. Also the HR team treats you very well until you get rejected then they stop answering which I felt a little rude. Since I got to the last interview I was told that I would have a last call about to give me feedback but never happened.