Pinterest Data Scientist interview experience

It was two main rounds. First, I completed a CodeSignal assessment with ten questions. Seven of them were machine learning multiple-choice or short-answer, and the remaining three were coding tasks. Two of the coding questions involved implementing Naive Bayes and gradient descent, and the last one was a LeetCode Medium-style coding problem.

The second round was a 60-minute technical interview with a Pinterest engineer. It started with fundamental machine learning questions, and then it moved into a LeetCode Medium difficulty coding question. Throughout, the tone felt professional and the