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Amazon AWS Interview Experience for SDE-1

  • Difficulty Level : Medium
  • Last Updated : 09 May, 2022

I have around 2 years of experience. I was approached by the recruiter on Instahyre and I was getting interviewed for AWS as an SDE-1. There were three technical interviews in total followed by a Managerial Round.

Phone Screening Round: This round was 1 hr long. The questions were :

Technical Interview 1:  The questions were: 

  • https://leetcode.com/problems/lru-cache/

Check whether a given rotated array can be changed to the o actual array by reversing any of its subarrays. Eg: rotated array : [1,4,3,2,5] actual array: [1,2,3,4,5], so (4,3,2) subarray can be reversed in rotated array to obtain the actual array. Hence, the result: true

Technical Interview 2: This interview was focused on an algorithm design problem. 

  • There are n keys and n locks of different sizes. We cannot directly distinguish between the keys and locks by just looking at them, hence we cannot compare them with each other. A compare function takes in a key and lock as parameters and returns any of these three values:
{k1, k2, k3, k4,....}
{l1, l2, l3, l4, ......}
key fits the lock
1: the y is larger for the lock
-1: the key is smaller for the lock

Write a program to map all the given keys and locks with each other and print such pairs. 

Managerial Round: This round was taken by the Hiring Manager. This round focuses on Amazon’s Leadership principles. Make sure you brush up on the principles pretty well before appearing for this round. A few of the questions were :

  1. Why do you want to work at Amazon?
  2. Have you faced ant situation where you worked under a tight deadline? How do you manage?
  3. What are your daily activities in your team?
  4. Any example where you did some innovation or coded anything to make the process simpler
  5. What are your contributions to your current team?

After each of the technical rounds also, the interviewers tend you access you on the Amazon Leadership principles. Hope this helps 🙂

My Personal Notes arrow_drop_up
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