Ask HN: Java dev interview at Atlassian, any tips?

Hi everyone,

I have an interview for a Java developer position at Atlassian coming up, I have made sure to study a lot of OOP and Java however I have heard terrible things about Atlassian interviews, I'm not sure if they are looking for solid OO, Java and algorithm skills, I am not very good with algorithms but I'm getting there. I REALLY don't want to mess this up, I love Atlassian products and their culture so any tips on how to prepare will be greatly appreciated.

Thanks.