An assistant professor is an entry-level university teaching position below that of associate professor and full professor. You can find work as an assistant professor in any department at a college or university. Assistant professorships fall into either tenure-track and non-tenure track positions. Regardless of whether you are tenure or non-tenure track, your duties are similar. You conduct research, teach classes, advise students on their studies, and perform numerous administrative functions, such as attending faculty meetings and professional conferences or events.