Palantir Tech is hiring for just about every position in the company (we're growing fast). The most YC-relevant positions are probably software engineers -- most of what we do is in Java (with a bit of Groovy glue). Most jobs are at our Palo Alto, CA hq.

See: http://www.palantirtech.com/careers

http://www.palantirtech.com/careers/positions

http://www.palantirtech.com/careers/interviewing

Also feel free to contact my directly -- jhscott/at/palantirtech[.com].

My favorite perk is probably 4v4 Halo3 after dinner on the two HD projectors in the game room.