Google

Difficult process. Very vague, it seems to be tech-focused, then switches dramatically. To strange questions which pay no relevance, then loses the train of thought. It would be better if it was more technically specific.

Email, then phone, then video call. Spoke with an engineer and solved code problems and thought process. Optimized solution for time and space. Easy to do if you write code daily.

Engineering interview: LeetCode, onsite, whiteboard problems. Know your systems. Get good at DP. Strengthen your fundamentals for sure. Enjoy learning about it through watching videos, for sure. You will then maybe get an offer. I did not.