Amazon SDET-1 Interview Experience

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Software Development Engineer in Test (SDET-1)
June 18, 2025 β€’ 5 reads

Summary

I underwent a multi-round interview process for the Software Development Engineer in Test (SDET-1) role at Amazon, encompassing an Online Assessment, a Technical Interview with coding questions, and a dedicated Testing round, with my verdict currently pending.

Full Experience

Status: πŸ•’ Verdict Pending (1 Month) Role: Software Development Engineer in Test (SDET-1) Education: Tier-3 Engineering College, Hyderabad Mode: Off-campus Platform: Amazon Careers Portal

πŸ“Œ Round 1: Online Assessment (OA) The first round was an Online Assessment conducted on a private test platform. The duration was around 90 minutes. The structure was as follows:

βœ… Part 1: Coding (1 Question) Level: Leetcode Medium

Topic: Strings

Efficient coding and edge-case handling were critical.

βœ… Part 2: CS Fundamentals (MCQs) 5 Questions from each core CS topic:

Operating Systems

DBMS

Computer Networks

OOPs

Data Structures and Algorithms

Conceptual clarity was tested rather than rote memorization.

Topics like ACID properties, indexing in DBMS, page replacement algorithms, and basic TCP/IP stack were covered.

🧠 Round 2: Technical Interview (~1 Hour) This was a 1-on-1 virtual interview conducted by an Amazon engineer. I was not told the type of round in advance β€” it directly started with coding.

πŸ”Ή Coding Section: 2 LeetCode Medium questions

Topics: Binary search,Strings

Emphasis on optimal solution & edge cases

1 LeetCode Hard problem

Topic: DP

πŸ”Ή Follow-up Discussion: Discussion on time complexity, test case dry-runs, and a few minor behavioral questions around team projects.

πŸ§ͺ Round 3: Testing Round (~1 Hour) This round focused on evaluating my testing mindset, system thinking, and ability to create comprehensive test plans. Again, I wasn’t informed this would be a testing round beforehand.

πŸ”Ή Question 1: "Write test cases for an eCommerce recommendation system"

πŸ”Ή Question 2: Testing Strategy + Test Cases for My Own Projects

They asked me to:

Briefly explain 2 of my projects

Share a manual + automation test strategy for each

Include edge cases, boundary values, and test data design

Key takeaway: Be prepared to defend your projects from a testing/QA angle, not just development.

❓ Verdict As of today, it’s been 1 month, and I haven’t received any update.

Interview Questions (2)

Q1
Design Test Cases for an eCommerce Recommendation System
Other

Write test cases for an eCommerce recommendation system

Q2
Develop Testing Strategy and Test Cases for Personal Projects
Other

They asked me to:

Briefly explain 2 of my projects

Share a manual + automation test strategy for each

Include edge cases, boundary values, and test data design

Preparation Tips

πŸ’‘ Final Thoughts Know your basics: CS MCQs weren't trivia β€” they required good understanding.

Practice LeetCode Mediums + 1-2 Hard problems from DP, Trees, Graphs, and Backtracking.

Be ready for any type of round without prior info β€” keep a strategy in mind.

For the testing round, prep system test cases for apps you built or common products (e.g., Amazon cart, Flipkart search).

Confidence and clarity help β€” especially in remote interviews.

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