Pros
Cool/talented people, nice office, catered lunches, interesting product. The office would often host cool science-related events with people showing off their research.
Cons
Team didn't feel very much like a team, everyone kept to themselves and there's little in the way of collaboration, information sharing, and help. The team felt very cold and isolating (everyone sitting in the same room with headphones on the whole time) which was disappointing when walking around the office and seeing other teams talk, laugh, and make being in the office feel worthwhile. Onboarding was minimal and fraught with issues (took forever to be given access to things, etc.), and with little documentation it was difficult to get started. Feedback felt inadequate. While teammates were nice and could be helpful, no one felt very approachable and it often felt like asking questions was a nuisance.