employment phases together should not exceed nine years. Assistant professorships are established at grade W1, have a teaching commitment of four to six semester hours per week, and are usually temporary. The temporary [...] the same as that of other professors, which includes academic independence: According to section 57(1) of the State University Act, "the professors and lecturers [...] shall independently perform the duties
https://www.uni-rostock.de/en/research/support-of-early-career-researchers/career-paths/assistant-professorship/