The hiring process for interns is the same as for full-time engineers.
After an initial auto-graded coding challenge on HackerRank, they gave me a phone screen, then a phone coding interview. At the end of the phone coding interview, they immediately told me they were going to recommend me for an on-site. It took less than two weeks to go through the process up until here.
The on-site was pretty standard: demos, three coding interviews, lunch, and more demos. At the end, they had me interview with the hiring manager, which I thought was a good sign. In fact, I felt like I did quite well all day -- I solved every problem I was given, and I thought I did a decent job of explaining my thought process.
They contacted me after a week and a half to say they weren't going to make an offer. I'm not really sure what went wrong, but the interview experience itself was pleasant.
The decomposition problem was to sketch out an implementation of Asteroids.
The following metrics were computed from 47 interview experiences for the Palantir Software Engineer role in Palo Alto, California.
Palantir's interview process for their Software Engineer roles in Palo Alto, California is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Palantir's Software Engineer interview process in Palo Alto, California.