I applied through a recruiter. The process took 3 weeks. I interviewed at Walmart (Bengaluru) in Jun 2021
Interview
ML rounds, ML coding, Project discussion, HM round with ML design. Question asked were on basic ML, probability, heavy on p-value, linear regression, statistics. ML design related to Walmart problem was asked in HM round. Overall process is good.
Interview questions [1]
Question 1
Q: Does R-square measure is sufficient for linear regression analysis. What if r-square value is low, does this mean that the fit is not good enough?
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