Landing an interview with Amazon is exciting, but also challenging. The process is structured to test not only your DSA
(Data Structures & Algorithms) skills but also your ability to adapt to real-world problems,
apply leadership principles and design scalable systems. Below is my complete interview experience with Amazon, broken down round by round.
Round 1: Online Assessment (Medium Level)
Duration: 60 minutes
Mode: Remote
Coding Problems: 2
The online assessment began with two DSA problems that went smoothly.
Problems Asked:
Valid Parenthesis Checker
Classic stack-based problem to validate balanced parentheses.
Longest Substring Without Repeating Characters
A sliding window problem requiring careful handling of indices and hash maps.
Work Simulation Round:
Managed multiple emails.
Diagnosed issues like a product page not loading.
Took quick decisions while prioritizing tasks.
Behavioral Questions:
Multiple-choice behavioral scenarios, where I had to choose the most likely and least likely responses in workplace situations.
Finally, I received an email asking me to fill out a survey before moving on to the next stage.
Round 2: DSA – Graph Problem (Medium Level)
Duration: 60 minutes
Mode: Remote
Coding Problems: 1
This round focused on a graph-based problem.
Problem Asked:
Evaluate Division Variation
Read input, build a graph and output results accordingly.
Approach: Graph traversal (DFS/BFS).
Round 3: DSA (Easy Level)
Duration: 60 minutes
Mode: Remote
Coding Problems: 1
Problem Asked:
Maximum Size Subarray Sum Equals k
A subarray sum problem solvable using prefix sum + hash map.
This one was relatively easy and I solved it quickly. Soon after, I got a call to schedule the next round on the same day.
Round 4: System Design (Hard Level)
Duration: 60 minutes
Mode: Remote
This was the most challenging round.
Task:
Design a bookstore system with multiple books and the ability to return the count of a particular word (e.g. a fictional character)
from a specific book.
My Approach:
Defined classes, objects and methods clearly.
Discussed how to efficiently store and search for words (indexing, hash maps and search optimizations).
Structured my solution logically with scalability in mind.
The interviewer was happy with my explanation and asked follow-up questions about my past projects, contributions and impact.
Landing an interview with Amazon is exciting, but also challenging. The process is structured to test not only your DSA\n(Data Structures & Algorithms) skills but also your ability to adapt to real-world problems,\napply leadership principles and design scalable systems. Below is my complete interview experience with Amazon, broken down round by round.
\n
Round 1: Online Assessment (Medium Level)
\n
\n
Duration: 60 minutes
\n
Mode: Remote
\n
Coding Problems: 2
\n
\n
The online assessment began with two DSA problems that went smoothly.
\n
Problems Asked:
\n\n
\n
Valid Parenthesis Checker \nClassic stack-based problem to validate balanced parentheses.
\n
\n
\n
Longest Substring Without Repeating Characters \nA sliding window problem requiring careful handling of indices and hash maps.
\n
\n\n
Work Simulation Round:
\n
\n
Managed multiple emails.
\n
Diagnosed issues like a product page not loading.
\n
Took quick decisions while prioritizing tasks.
\n
\n
Behavioral Questions:
\n
\n
Multiple-choice behavioral scenarios, where I had to choose the most likely and least likely responses in workplace situations.
\n
\n
Finally, I received an email asking me to fill out a survey before moving on to the next stage.
\n
Round 2: DSA – Graph Problem (Medium Level)
\n
\n
Duration: 60 minutes
\n
Mode: Remote
\n
Coding Problems: 1
\n
\n
This round focused on a graph-based problem.
\n
Problem Asked:
\n\n
Evaluate Division Variation \nRead input, build a graph and output results accordingly. \nApproach: Graph traversal (DFS/BFS).
\n\n
Round 3: DSA (Easy Level)
\n
\n
Duration: 60 minutes
\n
Mode: Remote
\n
Coding Problems: 1
\n
\n
Problem Asked:
\n\n
Maximum Size Subarray Sum Equals k \nA subarray sum problem solvable using prefix sum + hash map.
\n\n
This one was relatively easy and I solved it quickly. Soon after, I got a call to schedule the next round on the same day.
\n
Round 4: System Design (Hard Level)
\n
\n
Duration: 60 minutes
\n
Mode: Remote
\n
\n
This was the most challenging round.
\n
Task:
\n
Design a bookstore system with multiple books and the ability to return the count of a particular word (e.g. a fictional character)\nfrom a specific book.
\n
My Approach:
\n
\n
Defined classes, objects and methods clearly.
\n
Discussed how to efficiently store and search for words (indexing, hash maps and search optimizations).
\n
Structured my solution logically with scalability in mind.
\n
\n
The interviewer was happy with my explanation and asked follow-up questions about my past projects, contributions and impact.
Problem-solving in real-world scenarios through simulations.
\n
System design skills for scalability and efficiency.
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Behavioral alignment with Amazon’s Leadership Principles.
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If you’re preparing, focus on:
\n\n
Practicing LeetCode Medium/Hard problems.
\n
Strengthening system design fundamentals.
\n
Revisiting Amazon Leadership Principles and applying them in answers.
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