I am trying to understand if a 6-year long position of "researcher for habilitation" (called "Habilitationsstelle"), and that is offered in German universities, would be a junior position (just after the PhD) or with some level of seniority (maybe after 4-6 years of postdocs).
Other way around, what could be the average age for people who start the "Habilitationsstelle" in Germany ? Maybe just after the PhD, or after several years of postdocs ?
Also, could the "Habilitationsstelle" be equivalent to an Assistant Professor?