I applied online. I interviewed at Amazon (Seattle, WA) in Feb 2021
Interview
Three OAs as many others have described already (debugging, 2 LCs, and a work simulation). One 45m final round with an Amazon SDE who asked a two LP behaviorals and one technical question. Waitlisted 4 days after interview, about 10 days after that I was given the option to ask for a Fall internship instead of summer. I expressed interest in this and got an offer two days later.
Process itself was rather long (Applied in October, recieved first OA in early Jan, interviewed mid Feb, offer early March). However, I was very impressed with the speed and quality of communication with recruiters whenever I had a question or asked for an update. Made the interview process feel quite personal and respectful despite knowing the scale of their hiring operations.
Interview questions [1]
Question 1
3sum - find all unique triplets in an array that sum to a given value
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.
