I applied through an employee referral. I interviewed at Amazon
Interview
First round: Online Assessment. 2 Leetcode medium/easy questions + Leadership
Second round: 2 virtule onsite interviews, 1 hour each. First one is about quick ask-answer style deep learning, ML and causal inference questions. Very dispersed and some quite deep. About 25-30 questions. Second one is about my research and its extension.
Interview questions [1]
Question 1
Details about double ML, S-learner, T-learner, etc.
I was asked basic knowledge in deep learning and machine learning. Also had time of explaining my research. discussed how I can apply my research to the current project. Transformer architecture, bias-var tradeoff, use of positional encoding, long-term dependencies.
HackerRank assessment with solid, fair questions. Communication with the recruiting team was clear and professional throughout the process. I was invited to two additional interviews, one focused on research depth and the other on coding skills.
One phone screen on LeetCode-style medium coding question plus behavioral questions. One loop of three back to back interviews including one round of coding, two rounds of research plus behavioral questions.