The designers, programmers, testers and writers who wrangle the software into a usable form. This is the main body of people who work on inkscape's most technical aspects and they are often found in the inkscape-developer's mailing list.
To join this group, you should first join the GitLab project by providing two patches against any of the Inkscape coding projects (inkscape itself, extensions, etc) please make sure your username or email matches from GitLab and if you have any trouble, please contact the team administrator.