Jump is quite streamlined with only two main rounds: 1-hour online interview then superday. a few HR calls in between. Superday is very technical. They cater to the content that you're supposed to know given your background, so it's fair.

Few Hr calls prior and between. First round: Probability questions, questions on general ml knowledge: lasso, ridge, mathematical justification of gradient descent, prob inequalities, linear algebra and geometric interpretations of probability. Final Onsite: Leetcode problems, stats, harder probability problems, deeper into ml knowledge: linear regression basics, pca, linear algebra, questions on the classes you have taken. ML knowledge is very much needed.