Pros
A collection of some of the best people I've ever worked with. Smart, funny, kind, talented, hardworking. As mentioned in other reviews the different teams have different styles so that may effect things, but I always had a positive experience. I think there's a genuine commitment to getting more diverse people in the door and improving, and I think that's more an industry and society wide issue that you just see manifest at Instrument as well, nothing specific to Instrument or its environment. I can see why people say its clique-y but I think that's just because a lot of people are friends outside of work. If you make anything approaching an effort you'll find that the vast majority of people are kind and welcoming. Great client work too. The roster is top-notch and Instrument always ships good stuff.
Cons
I think the biggest thing was low compensation, and some unevenness around promotions although I've saw that improve a lot during my time there. I think it's part of the overall progression from being a smaller, looser place to a bigger org.