I applied online. I interviewed at Walmart (Boston, MA) in Aug 2013
Interview
After sending out my resume, I was contacted my a company recruiter. We had a great conversation. The recruiter was very friendly and knowledgeable. We talked about Walmart's advantages with enormous amount of data and I was very excited.
It took a big turn when I talked to one of their "engineers", he was very rude: constantly interrupted me and didn't have a clue about what he was talking about, unable to communicate and didn't know what a data scientist do. The worst interviewer ever. I feel sorry for his co-workers. He should be fired from his position.
Interview questions [1]
Question 1
A person using search engine to find something, you know nothing about her/him, nothing at all, how do you come up with am algorithm that will predict what she/he needs after the user types only a few letters ?
It was not that bad, 3 initial rounds overall okay, it would have been nice if they added some more depth in questions and asked good questions.
and it would have been great if they call or tell something before interview.
A former colleague referred me to the data scientist position, and I was excited to dive in. The interview process was intense, starting with a phone screen that led to a technical round focused on SQL and experiment design. I was asked to write a complex SQL query and design an experiment for a forecasting model. Lucky timing — I had reviewed similar questions on prachub.com during my prep, which really helped boost my confidence. After a final behavioral round, I received an offer and happily accepted.
Interview questions [2]
Question 1
Write a SQL query using window functions to find, for each product category, the item with the highest month-over-month sales growth
terrible Data Scientist role interview process, took 3 months and got rejected after final interview where the interviewer didn't have my resume and asked something else which the recruiter did not mention to prepare
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