Pros
Choosing to work at Palantir has been the best career move of my life. I liked my old job, but I love Palantir! I do work long hours, but when you really enjoy your work the time flies by. Having worked at Palantir for a while now I can tell you that a lot of the people that are griping about not being integrated quickly are because it's a high speed and challenging work environment. Most people coming into the DC office are not familiar with the flexible work environment that Palantir provides. Nor are they familiar with how things work at a fast moving company with streamlined oversight. At Palantir the only barrier to success is you. Sure you are given left and right limits, but really you control your own destiny at Palantir. I love this and try to seize every opportunity I can, however it is not necessarily easy to adjust to this type of environment. I think this is where some of the frustration from other reviews comes from. In my experience I did not truly "get it" until after 6 months of hard work. The personal growth I have gained at Palantir has been invaluable as well; in three years I have noticed so much personal growth in my professional skills. This is because I feel like I have been given the opportunity to do a lot of things that I would have never had the chance to do anywhere else. Even with all of the awesomeness of personal growth, career development, and working with awesome people, you also get some fantastic perks which you can read about on the website.
Cons
Palantir is so different from a lot of companies that it is often hard for people to adjust. This in turn can cause friction with people that don't adjust well to change.