I went through 3 stages of interview with positive feedback, but they cancelled the last stage after scheduling it, then put me on hold and then refused to continue, explaining that "suddenly" their requirements had changed and they have to search for local talent. I am very unhappy they wasted so much of my Stages: 1) HR 2) case study in Python 3) Data Science team assessment (experience, portfolio) 4) interview with Head of Analytics and Data Science (leadership skills)