Reima is a cultural historian focusing on the late medieval inquisition and Waldensianism, polemical literature and the Great Western Schism. He is interested in combining computational tools such as text reuse analysis and authorship attribution with the qualitative study of medieval texts and manuscripts.

Reima has received a Ph.D. in Cultural History from the University of Turku in 2016 and is currently a postdoctoral fellow at the Turku Institute for Advanced Studies and Adjunct Professor of Medieval History at the University of Turku. He has published a major book on the inquisitor Peter Zwicker, the Waldensians, and the pastoralization of heresy in the Late Middle Ages (Heresy in Late Medieval Germany: The Inquisitor Petrus Zwicker and the Waldensians, York: York Medieval Press 2019).

In DISSINET, he will lead a publication on the social networks of German Waldensians with a special focus on Zwicker’s deposition records from Stettin.