Hiring manager is rude and ignorant. Missed the scheduled call, was organising another one for a month. Did not invest time to read the CV and was leading the interview like it is kind of hot unicorn startup not yet another ecommerce mediocrity.

Several steps: - HR screen call - Python and basic statistics questionaire - Technical call to discuss understanding of ML concepts - Technical call to discuss past projects - Interview to discuss growth potential - Cultural fit interview.