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How to Prepare for Amazon Exam
Amazon's SDE hiring loop combines a coding-focused Online Assessment with deep behavioral evaluation against the 16 Leadership Principles, so preparation must cover both technical and behavioral areas. Amazon rejects strong coders with weak Leadership Principle answers just as often as weak coders.
A structured approach matters because each stage - the OA, two technical interviews, and the Bar Raiser round - evaluates a different mix of coding skill, reasoning, and cultural alignment. Studying the exact OA structure and preparing STAR stories early are essential.
Amazon Exam Preparation Tips
The tips below are organised by recruitment stage, following the order in which candidates encounter them.
1. Coding Challenge
The coding challenge is the primary elimination stage and tests algorithmic problem-solving under time pressure.
Practise DSA at Volume
Aim for 150-200+ LeetCode problems, Medium-heavy, prioritising the Amazon-tagged question list.
Focus on Strong Areas
Prioritise graphs (DSU, BFS/DFS), dynamic programming variants, binary search on the answer, and sliding window techniques.
Test Edge Cases
Always test empty inputs, single-element arrays, duplicate values, and large-scale inputs when solving problems.
Manage Time
Practise solving Medium-level problems within 20-25 minutes to comfortably fit the 70-minute coding window.
2. Work Simulation & Work Style Assessment
These sections test authentic workplace judgment and alignment with Amazon's Leadership Principles rather than coding skill.
Read Scenarios Carefully
Read each scenario carefully, as these sections are not "trick" questions but test authentic workplace judgment.
Know the Leadership Principles
Familiarise yourself with all 16 Leadership Principles before attempting practice work-style surveys.
Answer Consistently and Honestly
Answer consistently and honestly, as Amazon's scoring model flags contradictory response patterns.
3. Technical Interview Rounds
The technical interviews evaluate reasoning and communication as much as the final coding answer.
Think Aloud
Narrate your reasoning process throughout, as interviewers evaluate how you think, not just your final solution.
Clarify First
Always confirm input constraints and edge cases before writing code.
Start Brute Force
Explain a working brute-force solution first, then optimise and discuss trade-offs.
State Complexity
Always mention the time and space complexity of your final solution.
4. Bar Raiser Round
The Bar Raiser is the single hardest round in the loop, combining a demanding DSA problem with intensive Leadership Principle questioning.
Prepare Your Strongest Stories
Treat this as the hardest round and prepare your strongest, most specific STAR stories.
Prioritise Structured Thinking
Prioritise communication and structured thinking over rushing to a second "easy" solution.
Expect Deep Follow-Ups
Expect deep, pointed follow-up questions designed to test the authenticity of your stories.
5. Leadership Principles & Behavioral Prep
Behavioral preparation is assessed across nearly every round, not just the HR stage.
Build a STAR Story Bank
Prepare 15-20 detailed STAR stories drawn from real projects, internships, coursework, or team activities.
Map Stories to Principles
Map each story to 2-3 Leadership Principles so you can adapt it across different interview rounds.
Use "I" and Quantify
Use "I" rather than "we" to show your individual contribution, and quantify outcomes wherever possible, such as "reduced processing time by 30%".
6. Interview Preparation
Amazon's interviews combine technical coding rounds with Leadership Principle evaluation, so preparation should balance strong DSA fundamentals with well-rehearsed behavioral stories.
Do Mock Interviews
Simulate both the technical and Bar Raiser rounds with peers or platforms like Pramp to build comfort under pressure.
Defend Your Solutions
Practise defending your solutions under repeated "why" and "what if" follow-up questioning.
Master Your Projects
Know your most technically challenging project in detail, including architecture, technology choices, and trade-offs.
7. HR Interview
The HR/final discussion covers team fit, compensation, and logistics in a conversational format.
Prepare for Team-Fit Questions
Be ready to discuss team placement, role expectations, location, and relocation preferences.
Understand the Offer Structure
Familiarise yourself with the compensation structure, including base salary, sign-on bonus, and RSU vesting.
Prepare Questions to Ask
Prepare thoughtful questions about team culture and the role to show genuine interest.
Frequently Asked QuestionsFAQ
How should I start preparing for the Amazon exam?
Begin by revising core DSA topics and reading all 16 Leadership Principles. Study the full OA structure - coding, work simulation, and work-style sections - not just coding.
How can I crack the Amazon assessment in the first attempt?
Practise 150-200+ Amazon-tagged LeetCode problems, focus on graphs, DP, and binary search, and solve Medium problems within 20-25 minutes to manage the time window.
What skills does Amazon look for?
Strong DSA fundamentals, proficiency in Java, C++, or Python, clear communication of reasoning, and authentic alignment with Amazon's 16 Leadership Principles.
How do I prepare for the Work Style Assessment?
Learn all 16 Leadership Principles and answer consistently and honestly, since the scoring model flags contradictory response patterns rather than a single answer.
How should I prepare for the Bar Raiser round?
Treat it as the hardest round, prepare your strongest and most specific STAR stories, and expect deep, pointed follow-up questions on the "why" behind each decision.
How many STAR stories should I prepare?
Prepare 15-20 detailed STAR stories from real experiences, each mapped to 2-3 Leadership Principles so they can be adapted across rounds.
How should I answer behavioral questions?
Use the STAR method, connect each story to the Leadership Principle being tested, use "I" rather than "we", and quantify outcomes wherever possible.
What should I do the day before the interview?
Avoid new DSA topics, keep your resume, ID, and system test-ready, and re-read your top 5-6 STAR stories the night before.