Badgr and Jira integration

[Raul Diaz Watson]

I have been looking for a plugin to integrate badgr (https://badgr.com/) with Jira.
It seems like it used to be a plugin to integrate badgr with stash but not with Jira.

The main idea is to have those badges (or a link to them) displayed in every place where the user shows.

If I would want to create myself a plugin to integrate both services, what would I need to do?

I have never created a plugin or integrated anything with Jira..

- is this even possible?
- Is anybody able to write plugins and make them available in Jira or do I need to purchase a license or be an integrator partner?
- Can I have access to test resource like sandbox account, etc.?
- What programming language is available when creating plugins?