Jira User Management Best Practice

[Olive Sun]

I just got frustrated about the user management as there are different modules and each one refers to a corresponding Jira user group. Every time new hires onboard, I have to update the user group manually.

On the other hand, there should be a public page to show team members for transparency purposes. Right now I created a separate wiki page and also add people manually. 

This is kindly a stupid way that requires keep info consistent manually. Is there any way to make this easier and more efficient?