Pros
I have been working in software support for more than 10 years (tech support in general for more than 15), so I am old and jaded. When I started at Atlassian in 2014, I didn't really buy into what I was being told about culture and values, etc, but I signed on anyway since the pay was decent for a Support job and the people I met were all very nice. Now that I have been around for a while, I can honestly say that the Atlassian values are not bs and that, for the most part, the company cares about its culture. I used to work for another company that used to blow its culture up your rear end during the recruiting process, but when they went public, it became obvious that culture was not as important as those shareholders. One of things that I have been pleased about with Atlassian is that, so far, the transition to a public company has not really done much to the culture other than reinforce it. Working in Support, you are at the bottom of the totem pole and the work can be difficult, but I still look forward to coming in and working with my team every day and that is saying a lot (refer back to my comments about being old and jaded). Atlassian seems to care about its employees in ways that other companies may preach about, but don't really back up with their wallets.
Cons
The company is based in Sydney and most of the development is handled there. Since Sydney is literally in tomorrow, it makes communication between offices difficult. It's is obvious that our Support folks in AUS are much more involved with engineering than the rest of us around the world are. As others have mentioned, the company has a heavy bias towards developers and their work styles and life styles. While I don't feel that this is intentional, it still doesn't feel good to be told how important events are like ShipIt and then be told by your manager that you can't participate because someone needs to be around for the customers. I don't feel or notice the attitudes that others have noticed (maybe that is an AUS phenomenon), but there is certainly a feeling of disconnect between what feels like the privileged developer class and the rest of us.