Pinterest Data Scientist interview experience

The online assessment clocked in as a medium-hard one-hour section split into three parts, and the questions felt very technical.

The first section focused on stats, specifically hypothesis testing. The second section was also stats-heavy, centered on regularization. The last section was the most demanding for me because it asked me to complete the pieces of KNN clustering “from scratch,” filling in the modules rather than choosing an answer.

I finished knowing I’d spent most of my time wrestling with math and implementation details instead of reading for interpretation. The overall