I applied online. The process took 1 week. I interviewed at Amazon
Interview
A 45 mins' phone call from one engineer asking about my research and several machine learning questions.
It took about 20 mins to detail my research and 2 questions for the machine learning.
Interview questions [1]
Question 1
Question 1. How to deal with unbalance data where the ratio of positive and negative is huge.
Question 2. Estimate the disease probability in one city given the probability is very low national wide. Randomly asked 1000 person in this city, with all negative response(NO disease). What is the probability of disease in this city.
There are three rounds in total. The process begins with a coding round, followed by the main interview loop, where you will meet the team and discuss technical skills, experience, and fit.
First round is fun, second round, which is also the final round involved 5 sessions, with different focus. For some sessions, not be able to present my story completely, time was tight, and interviewers were rushing.
4 rounds:
ML breadth + Depth: Conceptual knowledge about ML and work experience discussion
Problem solving: Leetcode (Medium) + Basic ML concepts
Design + LP round: Use case discussion + Behavioural questions
Bar Raiser - LP round: Behavioural questions - Interviewer was non technical