Amazon Interview Experience for SDE-1 (Off-Campus)
I got a mail from an Amazon recruiter for the SDE-1 role. I applied through the Career Site.
Online Assessment round: 2 coding questions were asked. (don’t remember exactly), I have got an MD editor and also to explain my approach to questions and time complexities. You need to solve both questions to get a call for an interview.
Round -1 (Coding round): Around 3 weeks later, I received a call from the recruiter that I have 2 interview rounds in the next week on the same day. This round was taken by a senior SDE-2. We introduced ourselves and then he directly jumped into coding questions.
- Move zeros to last (https://www.w3wiki.net/move-zeroes-end-array/)
- Remove k consecutive chars (https://www.w3wiki.net/reduce-the-string-by-removing-k-consecutive-identical-characters/)
We first discussed the approaches to solve the problems and then when I reached the optimized solution to the problem. He asked me to write the code and discussed the space and time complexities.
Round – 2 (Coding round): After one hour on the same day, I had the next round of interviews. It was taken by two senior SDE-1. They asked me to introduce myself.
- I didn’t exactly remember the question but it was an application-based modified DFS of graph problem.
- Count ways to reach nth stairs. (https://www.w3wiki.net/count-ways-reach-nth-stair/)
I have explained both the question in 45 minutes. They asked me if I have any questions for them. I have asked them to tell me their experience.
After around a week later, I received a call that I have the next round of interviews on the next day.
Round – 3 (Bar-raiser round): This round is taken by a senior manager. We faced a lot of bandwidth issues from his side.
- He asked me about my recent projects. The approach, the challenges I faced, and their solutions.
- He asked me some behavioral questions too like Tell me about a time you made a blunder (Technical and personal both).
- He also asked me what are questions asked in my previous rounds. and then gave me this problem.
- Reverse zig-zag tree traversal. (https://www.w3wiki.net/zigzag-tree-traversal/)
This round didn’t go so well. I was nervous about the next round. The gap between this round and the next round was 15 minutes but this round lasted 10 minutes longer. So, I got only 5 minutes between both rounds.
Round – 4 (Bar-raiser round): This round was also taken by a senior manager having about twelve years of experience. We started with the Introduction.
- This was similar to the questions asked in the previous round. He asked me about my recent projects. The approach, the challenges I faced, and their solutions. This time he went in-depth.
- Also some HR questions, Why do you want to leave your current company?
- Why Amazon?
- Maximum sum path (https://www.w3wiki.net/find-maximum-path-sum-in-a-binary-tree/)
A week later I received a call that I got selected.
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