This add-on injects JavaScript into web pages. The addons.mozilla.org domain disallows this operation, so this add-on will not work properly when it's run on pages in the addons.mozilla.org domain.
A browser action that can be clicked to fill out a form with desired fields. On navigating to one of the primary recruiting vendors' forms (Lever, Jobvite, Greenhouse), the same button can be pressed to autofill the form.