Pros
The culture at Atlassian is one of the brightest things about it. It is a good group of happy people working hard to make it easier to work together. The upper management is very open and does their best to answer the hard questions. You are given a ton of autonomy but with that comes an expectation to perform at your best. The SF location feels like it is a very balanced place where company events feel like a party with a group of your friends rather than awkward team building tasks. The values are extremely important to the company and everyone can quote them, not because they make you feel good, but because you use them in your job every day.
Cons
Timezones - Global company forces meetings at odd hours, not much that can be done about this. Meeting rooms - we need more of them, lots of empty desks. Open office - I would like some more places to be by myself rather than constantly on display.