The last Year I learned a lot about Atlassian Products, because I could focus on the Technology and I had the goal to improve the experience for our users. But let me start from the beginning of my Atlassian jounrey.
2013 I joined a Start Up here in Austria. And this was my first touch point with Jira. At that time we used it as task management for SCRUM based workflows in development. After merging several Jira projects, and database migrations between Jira test instances and production (what a nice time) I also knew something about the data structure and user management.