- Debian template manager
- stable release manager
- core developer
You can read more in their posting. From my experience working with the Qubes OS team, they are easy to work with.
In my view, the Debian template maintainer and core developer positions are good ways to get a position in a Libre Software project, by starting as a volunteer working on open tasks. Be helpful. Relieve more work from existing developers than adding to their plate. This is the most convincing thing you can do.