Hackerrank coding challenge, a couple of phone calls, then an onsite with four to five (I don't remember the exact number) interviews, each about 25 minutes with 5 minutes in between.
Coding challenge: Given a list of integers, return the most frequently appearing integer.
The following metrics were computed from 304 interview experiences for the Palantir Software Engineer role in United States.
Palantir's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Candidates reported having good feelings for Palantir's Software Engineer interview process in United States.