He completed his doctoral studies in 2006 at the Max Planck Institute for Social Anthropology and Martin-Luther University (Germany). He has conducted research on ritual, memory, and religious transmission among Orthodox and Greek Catholics in Romania and Ukraine and more recently on St. Thomas Christians in South India. He is the author of Modes of Religiosity in Eastern Christianity: Religious Processes and Social Change in Ukraine (2008) and co-editor of Churches In-between (2009). He recently co-edited with Arnaud Halloy a special issue of Ethnos: Journal of Anthropology on Learning Spirit Possession (2012) and has contributed articles on Eastern Christianity to various journals and edited volumes. Based on his fieldwork with Russian Old Believers in the Romanian Danube Delta, he co-directed with Klara Trencsenyi an award-winning documentary Birds’ Way (2009).