I applied at my university. Palantir reached and after passing initial question on Hackerrank Phone interview was set and after passing phone interview onsite interview was in London. Onsite there were three tehnical interviews and one hiring manager interview.

I had behavioral interviews and then 4 in person interviews. The behavioral was straightforward. There was also a data query interview where they taught you a new "language" and had you execute basic queries in it. Then there was a system design interview. I had two of these. The last one they asked me if I was deployed to the moon to identify new species of alien what kind of system would I build.