I applied online. The process took 4 weeks. I interviewed at Amazon (Seattle, WA) in Oct 2023
Interview
Applied through amazon careers portal. Received an OA with 3 rounds Coding Challenge Work Simulation Work Style Surveys I’ve cleared the round and got invited for final 4round Loop interview.
Interview questions [1]
Question 1
Round 1 Leetcode medium question based on trees Round 2 System design question on a specific scenario that team is currently facing Round 3 Leetcode medium question based on monotonic stack Round 4 ML breadth round focused more on basic to advanced ML knowledge and a discussion on how would you approach a given ML problem that they are facing. All rounds constituted at least 2 behavioral questions either at start or end of the interview.
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.
Interview questions [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
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)