Professor Maier is a Fellow of the Alexander von Humboldt Foundation (University of Heidelberg, 1999-2000; 2004; Max Weber Kolleg, University of Erfurt, October 1, 2012-December 31, 2012), he was Father Edo Gatto Chair at St. Francis Xavier University in 2003, and an honorary Professor at the University of Exeter in 2009. He publishes in a variety of areas including visual culture, Roman imperial iconography and the New Testament, space and spatial practices in emergent Christianity, the representation of violence in Antiquity, ancient and contemporary apocalyptic theory, ecotheology and the New Testament, Roman imperial iconography and New Testament theology, the social meaning of clothing in Antiquity, Second Century Christianity (especially Ignatius of Antioch, the Shepherd of Hermas, and 1 Clement), and heresy and Christian diversity in the 4th and 5th centuries. In 2009, when guest professor in Exeter he offered research on the use of the Book of Revelation in American Evangelical environmental ethics. In 2009/10 he was awarded with Robert Daum an Association of Theological Schools Collaborative Research Grant on the theme, "Disturbing Images: Reading Civic Ideals in Early Judaism and Ancient Christianity against the Backdrop of Roman Imperial Iconography." From 1 January to 30 September 2012 he was a Max Weber Fellow and from 1 October 2012 to 31 December 2012 he was a Humboldt Fellow, both positions held at the Max Weber Centre for Advanced Cultural and Social Studies, University of Erfurt, Germany. During this period he explored the theology of place and self in early Christianity as a contribution to the research project headed by Prof. Dr. Jorg Rupke and Prof. Dr. Hans Joas, "Religious Individualization in Historical Perspective." He has recently completed Picturing Paul in Empire: Imperial Image, Text and Persuasion in Colossians, Ephesians and the Pastoral Epistles, published by T&T Clark/Bloomsbury, 2013. He is writing a commentary on Colossians and Philemon in the Blackwell Bible Commentary Series, contracted for completion in 2015. In 2013 he was appointed Fellow at the Max Weber College, where he returns regularly to continue research and take up academic duties. From May to August 2013 he conducted research at the Max Weber College on the topic, "HIdden Spaces and Secret Practices: Greco-Roman Tradition, Place, Identity, and Deindividualisation in Early Christian Polemic."
In 2014 he joined the seminar on Lived Ancient Religion, under the direction of Jörg Rüpke. In 2014 he became a member of the Context Group. He is delighted to have been appointed as a member of the soci corrispondenti at the Fondazione Collegio San Carlo di Modena, since 2014.