Pinterest Data Scientist interview experience

I got an email telling me to complete it and, when I logged in, I saw it was monitored with both a microphone and webcam on. The multiple-choice machine learning theory questions were genuinely difficult, and they were strict about selecting every correct option—if a question had three correct answers and I picked only two, it was marked wrong.

After that, there was a coding section that felt closer to medium-level LeetCode. But the final question was the real time crunch: I had to implement gradient descent from scratch, even though most of the surrounding code was already written and only