Worst interview ever. The case study is irrelevant to the role and just like brain teaser. The interviewer is so weird that she has no facial expression nor speak with energy/emotion. That is really scary. Just can't imagine how such person could work in a startup environment. The interviewer also hinted that I was rejected on spot with a creepy smile, finally. Really disappointed that such people with slightly more experiences could be hiring manager. Never been so relieved to fail an interview.