Lecturer
From Tardis Wiki, the free Doctor Who reference
A Lecturer is described as someone who holds an open-ended, tenure-track or tenured position at a university or similar institution, and is often an academic at an early career stage who teaches, conducts research, and leads research groups.
The Twelfth Doctor worked as a lecturer at St Luke's University for around 70 years. (TV: The Pilot, Knock Knock)