I applied through a recruiter. The process took 4 weeks. I interviewed at Amazon (Dublín, Dublín) in Sep 2021
Interview
The interview process started with an online coding assessment. The questions were based on easy-mid level Array/Problem Solving topics. Afterwards I had a phone interview, which took like 60 minutes. Finally i had a virtual interview with 4 different interviewers. One of them was fully about behavioral questions and one of them was about fully about Object Oriented Software Design.
Interview questions [1]
Question 1
Design an LRU Cache (OOP Design question)
Find the missing number in an array
Difference between Set/HashMap/List
Find if a cycle exists in a given LinkedList
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.
