An online adjunct professor works for a college or university, teaching students about a particular subject, either through an online course or as part of an online program. As an online adjunct professor, you are a part-time instructor in your field. To supplement your income or to gain more experience, you may choose to work for multiple colleges or pursue a full-time career in your field. Your job duties include developing curriculum, preparing lesson plans, teaching students during online courses, evaluating student work, and posting grades. You may also assist with research in your chosen field, collaborating with full-time professors and research assistants.