Currently working as Atlassian Consultant for the European Commission, previously worked for IBM (mostly developing Jira plugins) and Advantage Software Factory (developed a banking software using Java)
I constantly install/upgrade instances of Jira and Confluence for my current position, and use other atlassian tools such as: Bamboo, Stash, BitBucket, HipChat
I also take care of the administration part and custom add-on development on a daily basis, including scripting for JIRA (Groovy scripts).