Only select DE staff members will have access to the Django admin. Group membership at the account level is separate from the is_staff and is_superuser settings (both of which are specific to the Django Admin).

Group memberships exist to control tool access on the my.jobs front end UI. They have zero bearing on the Django admin backend. 

As a hypothetical, someone in the staff group would have the ability to edit which companies are tagged as "STEM" via an app at my.jobs/company-groups/ (a feature we wouldn't want to make available to a company admin). That same person is not granted _is_staff access to the admin where they can, for example, view private user information. This access is limited for security and privacy reasons.