Surprisingly easy — I expected tougher questions, but the coding round felt more like a warm-up. The main challenge was a DSA problem about counting islands in a 2D grid, which led to a discussion on DFS versus BFS and handling large grids. Funny enough, I had revisited that exact type of question while prepping on PracHub, which made me feel more confident. The interview wrapped up with a behavioral round, and I accepted an offer, but ultimately decided to decline it for another opportunity. Overall, it was a smooth experience.
Interview questions [1]
Question 1
Number of Islands — given a 2D grid of '1's (land) and '0's (water), count the number of connected islands. Walk through DFS vs BFS, and discuss how to avoid revisiting cells (in-place mutation vs visited set) and what changes if the grid is huge and must stream from disk.
I applied through an employee referral. The process took 4 weeks. I interviewed at Amazon (Arlington, VA) in Oct 2021
Interview
Overall was a very enjoyable interview process. Every recruiter/interviewer I talked to made sure I wasn’t confused about anything and had all the information I needed. Interviews were difficult but gave plenty of opportunity to exhibit my competence and personality. I was given an online assessment which consisted of two coding questions that lasted about 40 minutes each. Both LC medium level. After the assessment I was contacted a week or so later for a final round interview, which was scheduled two weeks later. Consisted of four rounds of hour long interviews which were partially behavioral, partially technical. Got an offer five days later.
Interview questions [1]
Question 1
I signed an NDA so I can’t reveal the exact questions but they’re typical interview questions.
It started with an OA, and then after a few weeks, I got invited to four rounds of interviews: technical and behavioral at 3 of the 4, and behavioral only at one.
I applied online. I interviewed at Amazon (Calgary, AB) in Jun 2026
Interview
Online Assessment is the first step in the process. I didn’t have an HR phone screening and went straight to the OA after applying. It was sent to me about a week after I submitted my application.
Interview questions [1]
Question 1
The first question is LeetCode style algorithms question, and the second question gives a full stack repo (choice of Java, NodeJS, or Django) and asks to solve a backend issue which is causing a bug in the frontend. Unit tests must pass to pass the second question. You can run both backend/frontend indivdually or together