Etsy Data Scientist 上门面经

Phone round 1:

Phone round 2:
ML basics: L1/L2 norm, Logistic regression, PCA/SVD, Confusion matrix, Gradient descent, Dropout etc.

Onsite round 1:

Onsite round 2: Design a recommendation system for Etsy

Onsite round 3:
Design a ML system that maximizes click bait. The more a user clicks on ads, more revenue Etsy generates

Onsite round 4:
High level discussion about proir work and projects with the manager.

Onsite round 5:
Talk about my Ph.D.