I applied online. The process took 2 weeks. I interviewed at Amazon in Dec 2021
Interview
Interview was an initial phone screen conducted on Amazon chime (basically a chatroom, no video or screenshare) and Livecode:
15 minutes behavioral
15 minutes machine learning fundamentals
~25 minutes coding question
5 minutes at the end to ask questions
Interview questions [1]
Question 1
Behavioral questions were heavily oriented towards the Amazon leadership qualities.
> Name a time you were innovative
> Name a time you delivered a simple solution to a complex problem.
Follow up questions included how to quantify the level of success in projects brought up.
Machine learning fundamentals:
> How to deal with a troublesome dataset (interpretation open ended so think data cleaning, etc.)
> How to deal with misrepresentative training data
(imbalanced dataset, overfitting, explain how L1/L2 regularization work at an optimization level)
> How to deal with a large dataset where only a few examples are labeled (semi-supervised learning)
Coding question was: https://leetcode.com/problems/find-original-array-from-doubled-array/
The technical round kicked off with a challenging system design question about creating a real-time product recommendation engine for Amazon. It required deep thinking and a solid grasp of machine learning principles. After that, I tackled a complex DSA problem on finding words in a grid using a trie and backtracking. Funny enough, that exact question was on prachub.com just days before, so I felt remarkably prepared. The overall process was intense but rewarding, and I was thrilled to receive and accept the offer afterward.
The interview process was smooth, and the interviewer was professional and friendly. It was online and took about 35 minutes. The recruiter will give you some guidelines on how to prepare.
Only had first round, a recruiter reached out to me as I had applied for another role. the total time to interview was 2 weeks. One recruiter interview and then with the hiring manager
Interview questions [1]
Question 1
Low level system design about designing a ranking system based on the number of sales of a product as well as taking into consideration the time complexity. had to do some in O(logn)
