Vantaggi
There are many genuinely good-hearted, helpful, well-intentioned people who believe and live the stated company values, which is no small feat considering Atlassian's size. Thought leadership, when shared, is generally good quality and a source of pride.
Svantaggi
Cosign many of the points made by the January 2 reviewer: Atlassian is great at bringing in motivated, quality talent and letting those folks languish. There is limited opportunity for upward mobility, and where it is present, your options are to work for a brand-new manager promoted out of seniority (hit or miss), or a transplant from a traditional enterprise software company whose cultural-fit section of the interview must have gotten cut short (sure miss). The HR team (I refuse to call them Talent, since they clearly do not see employees as such) is among the least reliable/responsive I've ever seen. To call them tone-deaf would be an understatement. Valid complaints around gender discrimination and hostile work environment are brushed off; the constant refrain of "look at the perks we offer" to questions around pay scale was once funny and is now just insulting. What perks?