This easyredmine plugin helps you to use the users and all user informations in Qlik Sense. It also provides a webticket authentification for all user from redmine into Qlik Sense. All in all this is a really god showcase for a webticket integration for other systems, so please feel inspired.
Feel free to open issues or send me PRs for changes. If you need a support for that, just contact akquinet we can provide also commercial support for that product.