Pinterest Data Scientist interview experience

Most of it was multiple-choice—seven questions in total—and the rest was coding, three problems that were described as medium difficulty.

The multiple-choice portion tested a mix of ML fundamentals and interpretation. I saw questions around confusion matrices where I had to pick the option that met given true positive rate and false positive rate requirements. There were also questions about activation functions, including details connected to neuron counts using a sigmoid function.

For coding, I had to complete key functions related to decision trees and parts of gradient descent. Overall