J'ai postulé en ligne. Le processus a pris 2 semaines. J'ai passé un entretien chez Amazon en déc. 2021
Entretien
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
Questions d'entretien [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 phone screen was straightforward, starting with some basic algorithm questions. After a few minutes of discussing my background, we dove into a coding challenge about finding two numbers that sum to a target. I enjoyed explaining both the brute-force method and the optimized hash map approach. The wild part was that I had practiced a similar problem on PracHub just a few days earlier, so it felt familiar. Following this, there was a technical round focused on machine learning concepts, which went smoothly before I received a written offer. Overall, a positive and engaging experience.
Questions d'entretien [1]
Question 1
Given an array of integers, find two numbers that sum to a target value. Start with a brute-force O(n^2) approach, then optimize using a hash map to O(n). Walk through edge cases (duplicates, negative numbers, no valid pair) and discuss the space-time tradeoff.
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
Questions d'entretien [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)