I applied online. The process took 2 months. I interviewed at Amazon (Seattle, WA) in Nov 2013
Interview
I applied online and was contacted by a recruiter to complete an online coding assessment which 3 basic algorithms and data structure questions that you have to complete in an hour and a half. You are asked to describe in your own words your thinking process and how to came to the solution you gave. You are also asked to give the time and space complexities of your solution. After about 2 weeks I was invited for an onsite interview in Seattle.
The onsite interview was similar to the coding test. I was interviewed by about 5 engineers from Amazon, most of the questions were your basic algorithm and data structures and problem solving questions. The interviewers were very helpful and pointed out where I went wrong and also helped in debugging the code I had written. The bar raiser gave the toughest question of the lot.
Interview questions [1]
Question 1
The bar raiser. Can't post the actual question because of the NDA I signed.
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.
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.
Um teste de código online, se aprovado, vai para o loop. O loop é 4 entrevistas seguidas, duas em inglês e duas em português. 3 entrevistas técnicas de código, todas as 4 têm pergunta de liderança.
Interview questions [1]
Question 1
Pergunta historicas baseada nos principios de lideranca da amazon.