I applied online. The process took 2 weeks. I interviewed at Palantir Technologies (Palo Alto, CA) in Jan 2015
Interview
1 informative phone screen, 1 technical phone screen, 3 onsite 1-hour interviews. After two of the on site interviews, you have a lunch with an employee who lets you ask and answer questions about the company. The phone interviews are what you'd expect from a technology company. The on sites were a mixture of coding challenges and automation and testing theory.
Interview questions [1]
Question 1
Given an array of ints where all values are duplicated except for one, find the value of the element that isn't duplicated. (e.g. [1, 3, 5, 6, 3, 1, 6] would return 5)