Diversity, good infra/equipments, variety in terms of projects/technologies - but not everything is perfect though
Pros
I grew up a lot since I joined the company and I know that this is common thing there for everyone, which is awesome. There used to be always good tech people in there, but the scenario has been changing a bit these days (take a look at the "cons" below). Work x life balance is good if you are not a person willing to do "big jumps" in terms of promotions, otherwise your life needs to be spend mostly in the company. Work times are pretty flexible and the variety of projects is a big thing for those who want to expand their paradigms in terms of IT. Clients are also diverse, so you will have a bunch of different challenges while there.
Cons
Lately, as the company is aiming on having more diversity (genre, race, etc), the tech expertise of new hires decreased a bit. The hiring process used to be harder than it is nowadays, and that's part of their diversity strategy. The idea is that more "senior" colleagues can help these new hires with less tech background to be able to have a good grip on related subjects - this is very nice, but sometimes due to this "urgency" on hiring more diverse people, the hiring process ends up accepting people that are not technically able to join a team and starting doing billable work ASAP, which leads to very slow on-boards and/or not offering the "excellence in technology" that the company marketing likes to talk about. Due to the variety in terms of projects/technologies, I know that people get tired after a while - the work becomes too shallow, i.e. you are never able to go really deep in a given technology/methodology, as you keep switching it through different projects. It's too intense/dynamic, and that starts to drown people's energy with time. The salary anual reviews, despite its organized process and being generally OK, are not really fair. They say that it's not possible for one to do big jumps in terms of promotions within an year period, but there are some cases where someone that joined as a junior got to a senior grade in less than 2 years - that's really lame, and the reason is that not always those who did big jumps are really "that good", is just that they are more extrovert people, keep talking and talking with the management and are always spreading the work about little things that they do - so others hear about it and think "wow, that is really good". I know a bunch of other folks that are the opposite (introvert + don't keep broadcasting what they do there), but are way more dedicated to the company - either by coaching/mentoring other folks in there, writing articles for magazines, giving talks or by doing an excellent job with clients - something that many don't care that much. It seems like for the management that is just "the basic" and they don't care. This is the worst part IMHO.