I applied online. The process took 2 weeks. I interviewed at Amazon (Bengaluru) in Apr 2025
Interview
The interview process consisted of multiple technical rounds. It started with an online coding assessment focusing on data structures and algorithms, followed by two technical interviews that involved problem-solving, system design basics, and core CS concepts like OS, DBMS, and OOP. One round also involved a discussion about my projects and past internship experience. The final round was with a senior engineer and focused on debugging and code optimization.
Interview questions [1]
Question 1
Q: Given an array of integers, find the length of the longest subarray with a sum equal to zero.
Q: Implement a Least Recently Used (LRU) cache.
Q: Given two sorted arrays, merge them without using extra space.
Q: Detect and remove a loop in a linked list.
Q: Implement a trie and add functions for insert, search, and delete.
Q: Write a program to perform matrix rotation by 90 degrees clockwise.
Q: Find the kth largest element in an unsorted array.
Q: Implement a stack that returns the minimum element in O(1) time.
Q: Given a binary tree, perform a zigzag level order traversal.
Q: Find the number of islands in a 2D grid (DFS/BFS-based problem).
I received an Online Assessment (OA) invitation from Amazon. The assessment consisted of two coding questions of medium to hard difficulty, focusing on data structures, algorithms, and problem-solving skills. The questions required efficient solutions with optimized time and space complexity. After the OA, shortlisted candidates typically proceed to one or more technical interview rounds covering coding, system design, and behavioral questions based on Amazon's Leadership Principles.
Applied online via career site, received OA link within 2 days and cleared it, Round 1- DSA, Round-2 DSA, Round 3- System Design, Round 4- Mixed Technical Discussion and Behavioral.
Interview questions [1]
Question 1
Number of Islands (LC 200 - Medium): You are heavily advised to know how to traverse connected components using a 2D grid.
Interview involved one screening OA and one final day, 3 back to back interviews, one technical, one behavioral and one mix. Focused on leader ship principles and DSA and algo
