first and last step: They sent me a link to do the take-home challenge. I did it and they said the link was expired (I did the challenge already how could it be expired!) and it too late to complete it. They said it was the website's glitch that showed you the exercise it shouldn't have, we can't accept it since it was done a day late. They treat interviewees like kindergartners! Their behavior over the email was really really unprofessional and rude. I'm glad I haven't wasted my time more than this on these people. I feel bad for employees that work there.

This was a while ago (in 2019). The question was a simple question finetune a tf classifier for a specific task. However there were glitches in the weights shared (it was also a Caffe Model - who in academia ever touched this antiquated language) and I was given a very short time to work on the project. After spending 2 sleepless nights and getting back to them - they didn't even have the courtesy to schedule an initial interview. It is okay to reject but respect the other person's time and effort they put into the interview. It says a lot about the type of company you want to become.