Me postulé a través de una recomendación de un empleado. El proceso tomó 2 meses. Acudí a una entrevista en Amazon (Seattle, WA) en mar 2018
Entrevista
I underwent 7 rounds of interview. The first was telephonic with the hiring manager. He asked me behavioral questions, mostly around my projects. The next was onsite interview, 5 rounds technical. I was asked about my projects, ML questions, predictive modelling, exploratory analysis, few coding etc. It was a long day. Then after a week there was one more telephonic interview. It was a mixture of my projects, codes and case study including statistics.
Preguntas de entrevista [1]
Pregunta 1
write a code in R/SQL:
Given a table with three column, (id, category, value) and each id has 3 or less category (price, size, color). Now, how can I find those id's for which the value of two or more category matches to one another? For eg: ID1 (price 10, size M, color Red), ID2 (price 10, Size L, Color Red) , ID3 (price 15, size L, color Red) Then the output should be two rows: ID1 ID2
and ID2 ID3
There are three rounds in total. The process begins with a coding round, followed by the main interview loop, where you will meet the team and discuss technical skills, experience, and fit.
First round is fun, second round, which is also the final round involved 5 sessions, with different focus. For some sessions, not be able to present my story completely, time was tight, and interviewers were rushing.
Thrilled to have accepted the offer — the process was tougher than I expected. The first round was primarily technical, where I tackled an A/B testing design question that required detailed metrics and sample size calculations. Later, I faced a SQL query challenge focused on tracking customer purchases over consecutive months. Funny enough, I had spent quite some time on PracHub digging into similar case studies, which really helped me approach these problems confidently. The final round included behavioral questions, and I felt well-prepared overall.
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