Online Assessment (OA)

The first step was an online coding test. It included two algorithm-based problems that tested my problem-solving skills using data structures like arrays, hash maps, and graphs. There was also a work simulation section where I had to choose responses based on Amazon’s Leadership Principles.

Technical Phone Screen

After passing the OA, I had a virtual technical interview with an Amazon engineer. This lasted about 45 minutes and focused on a coding problem that I had to solve in a shared coding environment. The interviewer encouraged me to explain my thought process and optimize my solution.

Onsite Interviews (Virtual in My Case)

The final round consisted of four back-to-back interviews:

Coding Interviews (2 rounds): Each round involved solving a data structures and algorithms problem, similar to LeetCode medium/hard problems. I was asked to implement my solution and optimize it while explaining my approach.

System Design Interview: I had to design a scalable system for a given problem, discussing database choices, API design, and failure handling.

Behavioral Interview: This focused entirely on Amazon’s Leadership Principles. The interviewer asked situational questions like "Tell me about a time when you faced a conflict in a team and how you handled it." Using the STAR (Situation, Task, Action, Result) method helped structure my answers effectively.

One of the challenging questions they asked me was about optimizing a meeting room scheduling system. The problem was similar to a "Merge Intervals" type of question.

Problem Statement: "You are given an array of meeting time intervals where intervals[i] = [start_i, end_i]. Determine if a person can attend all meetings without any overlap."