Amazon Alexa 3P Team – Onsite Hiring Drive

Recently attended an onsite hiring drive for the Alexa 3P team at Amazon. The process included an Online Assessment followed by onsite rounds. For me, only two onsite rounds were conducted. HR mentioned they would follow up with feedback and details about further rounds, but I did not receive any updates after that.

Round 0: Online Assessment

Standard DSA-based OA.

Round 1: DSA (Onsite – Paper Coding + Dry Run)

1. Boundary of Binary Tree
   https://leetcode.com/problems/boundary-of-binary-tree/description/

2. Problem (Custom):
   You are given a cropArray representing frequencies of different crops.
   Also given a grid of size M x N where M * N = total frequency.
   The task is to fill the grid such that same crops are placed adjacently (horizontally or vertically).

Behavioral (Leadership Principles)

• Tell me about a time you faced challenges while working on something and how you overcame them.
• Tell me about a time you handled a customer issue.

Round 2: Low-Level Design (LLD)

Design: Digital Wellbeing System

Requirements:

• Track screen time of different applications
• Display usage statistics
• Persist data for the last 7 days (even across device reboots)

Behavioral (Leadership Principles)

• Tell me about a time you had to learn something new and apply it in your work.

Overall Experience

The interviews were focused on problem-solving, clarity of thought, and system design fundamentals. Coding was done on paper with an emphasis on dry runs and edge cases.