North American Editor for Early Medieval Europe (publ. B. H. Blackwell) January 2000-2011
Corresponding Editor, Early Medieval Europe, 2011-
Editor, Illinois Classical Studies, January 2004-2011
Advisory Editorial Board, The Journal of Late Antiquity 2007 –
Advisory Editorial Board, The Journal of Medieval Latin 2012-
International Editorial Board, Wiener Studien 2007-
Latin Editor for Dumbarton Oaks Medieval Library Series (= Medieval Loebs, Harvard University Press: https://www.hup.harvard.edu/collection.php?cpk=1320): 2009-)
(33 Latin volumes have appeared under my editorship)
Editorial Board, Corpus Scriptorum Ecclesiasticorum Latinorum, Universität Salzburg, 2013-