Pros
I can't say enough great things about working at Atlassian. I was a customer using their tools before joining the company. My experience helped me to land my current role on the TEAM. Yes - that's right TEAM! They are a company but more than that they are a group of teammates working on many goals together. If you're not a team player then this is not your future. Only team players need apply.
Cons
There's A LOT of content to digest here. Some historical and tons of fresh content coming in at a very fast pace. Sometimes it same seem difficult to keep up with all the new features and information about them. With a lot of tools there comes a lot of learning how to use them or provide guidance to others on using them. You've got to be organized and able to mark content for reference later.