Questions d'entretien Data Scientist chez Walmart | Glassdoor
Offre acceptée
Expérience positive
Entretien facile
Candidature
J'ai postulé en ligne. J'ai passé un entretien chez Walmart (Bentonville, AR) en mars 2021
Entretien
Applied for the data scientist new grad position online. Process: hackerrank, data challenge, final round.
1. Hackerrank has multiple choice with one coding question (join two sorted arrays)
2. Data challenge is about building simple ML model for binary classification and examining classifier performance. Also some extra questions about features
3. Final round: interview with senior data scientist on stats, probability and ML algos
Questions d'entretien [1]
Question 1
1. what is random forest?
2. given a dataset, what would be the output of the k-means algorithm?
3. what is a CNN?
4. why do you want to join walmart?
5. suppose you roll a die and earn whatever face you get. what is the expected return?
6. now suppose you have a chance to roll a second die. if you roll, you forfeit your earnings from the first round. when should you roll the second time?
J'ai passé un entretien chez Walmart (Toronto, ON)
Entretien
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.
Questions d'entretien [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