I applied through a recruiter. I interviewed at Wildberries Marketplace (Moscow, Moskva) in Feb 2026
Interview
Asking about background, choosing couple of cases on application of ML. Follows up with theoretical and fundamental mathematical questions regarding why it happens, when it happens, why it is important. Topics are relatively depends on your background, mine was about Decision Trees, Linear regression, L1/L2, ROC-AUC, PR-AUC, TimeSeries.
Interview questions [3]
Question 1
What is the mathematical reason why it is very important to remove multicollinearity in Linear regression models and why multicollinearity does not have such impact on decision trees?
I interviewed at Wildberries Marketplace (Moscow, Moskva)
Interview
1.5 hour technical interview with python, sql and probability problems. coding on virtual white board, python problem from leetcode, sql problem on tables merging and aggregation, probability problem is solved with use of some formulas