First interview with team lead -ok, friendly, given a test to solve in an hour, then discuss your background. 2nd interview with director - he didn't show up lol. Don't bother applying. No updates or whatsoever was given, no notification saying he'll be late, very unprofessional when you are the director of the company. This shows you very clearly what it would be like when you work there. Plus, it was nighttime, I blocked my time just because of the interview, then wasted my time, just don't apply.

Great interview with technical lead, combination of technical questions and coding tests. No LeetCode, just machine learning and data processing related topics, which are things that would be done in a real life Machine Learning engineer job,