there are resume screening, on-campus one-hour interview and on-site full-day interview overall, the interview requires a well-round skillset including coding, stats, problem solving and soft skills people are nice during the interview process have the chance to meet the head after the interview

First round is HR phone screen. Everything goes well (at least I think), the HR is nice. And I was told that I will received a case interview with the manager (as she said I am doing very well). However, after one week, I receive an email that I cannot get the offer. Well, ok.