• Since 2026: Research associate in AnHuNav (Animal and Human Navigation in Antiquity)
• 2025-2026: Research Associate (DFG project 518257140), Inscriptiones Christianae GraecaeChristian-Albrechts-University of Kiel
• 2023-2025: Research Fellow, Protestant Theological School, University of Vienna
• 2019-2023: Research Fellow (FWF Project 31343), Protestant Theological School, University of Vienna
• 2017-2018: LMUexcellent Research Fellow, Ludwig Maximilian University of Munich
• 2014-2016: Research Associate, Humboldt University of Berlin

• 2026: Habilitation (New Testament Studies), Protestant Theological School, University of Vienna
• 2014: Doctorate in Ancient History, Macquarie University, Sydney, Australia
• 2010: Bachelor of Theology (Hons 1), Sydney College of Divinity, Australia

• 2015: Chris Dixon Medal, Centre for the History of Christian Thought and Experience, Society for the Study of Early Christianity, Macquarie University
• 2014: Vice Chancellor's Commendation for Academic Excellence, Macquarie University
• 2010: Dr Beth Blackall Prize, Sydney College of Divinity

• Since 2026: Member of the Scientific Advisory Board, Inscriptiones Christianae Graecae (https://icg.uni-kiel.de)
• 2014-17, 2025-26: 'Digital editor', Inscriptiones Christianae Graecae
• Since 2020: 'Field editor' (Greco-Roman world), Advances in Ancient, Biblical, and Near Eastern Research (AABNER)
• 2017-2019: Member of the seminar 'Polis and Ekklesia: Investigations of Urban Christianity', Society of Biblical Literature

• Studiorum Novi Testamenti Societas, since 2023
• Society of Biblical Literature, since 2010
• Association Internationale d'Épigraphie Grecque et Latine, since 2015
• Research Associate, Department of New Testament and Related Literature, University of Pretoria, since 2025

• Depictions of animals in early Christian literature
• Depictions of animals and iconography in early Christian art (esp. inscriptions and mosaics)
• Navigation and geographical-spatial constructions in early Christian literature
• Digital modelling of the spread of early Christianity

• Early Christianity in Epirus

• Pauline writings (esp. Philippians, 1 Thessalonians)
• Early Christianity in Macedonia
• Early Christian epigraphy and digital epigraphy
• Philology and Greco-Roman context of the New Testament
• Social history of early Christianity

1 Books

• 2025: 1 Thessalonians: Epigraphical Commentary on the New Testament 1. WUNT 545. Tübingen: Mohr Siebeck.
• 2024: Early Christianity in Macedonia: From Paul to the Late Sixth Century. AJEC 119. Leiden: Brill.
• 2018: C. Breytenbach and J. M. Ogereau, eds. Authority and Identity in Emerging Christianities in Asia Minor and Greece. AJEC 103, Leiden: Brill.
• 2014: Paul's Koinonia with the Philippians: A Socio-Historical Investigation of a Pauline Economic Partnership. WUNT 2.377.

2. essays

• 2025: "'In Sickness and Healing': Epigraphic Commemorations in Ancient Everyday Life." Ephemerides Theologicae Lovanienses 101.3 (2025): 377-94.
• 2023"The Rise and Expansion of Christianity in Macedonia: An Epigraphic and Archaeological Perspective." Early Christianity 14: 291-310.
• 2022: "The Emergence and Development of Christianity in Thessalonica in the Post-Apostolic Age (II-VI CE): An Epigraphic and Archaeological Perspective." In J. R. Harrison and L. L. Welborn (eds.), The First Urban Churches, vol. 7: Thessalonica, Atlanta, Society of Biblical Literature Press, 175-235.
• 2022: "Πίστις, Ἀγάπη, and Ἐλπίς in 1 Thessalonians: New Insights from Old Stones." In P. G. Bolt and S. Kim (eds.), God's Grace Inscribed on the Human Heart: Essays in Honour of James R. Harrison, Sydney, SCD Press, 467-83.
• 2019: "Soteriology in Early Christian Inscriptions from Asia Minor and Greece." In D. S. du Toit, C. Gerber, and C. Zimmermann (eds.), Sōtēria: Salvation in Early Christianity and Antiquity, Leiden, Brill, 616-41.
• 2018: "Χειρόγραφον in Colossians 2:14: The Contribution of Epigraphy to the Philology of the New Testament." In J. Verheyden, M. Öhler, and T. Corsten (eds.), Epigraphical Evidence Illustrating Paul's Letter to the Colossians, Tübingen, Mohr Siebeck, 93-121.
• 2018: "The Social Constituency and Membership of the First Christian Groups at Philippi: A Literary and Epigraphic Survey." In J. R. Harrison and L. L. Welborn (eds.), The First Urban Churches, vol. 4: Philippi, Atlanta, Society of Biblical Literature Press, 79-122.
• 2018: "Authority and Identity in the Early Christian Inscriptions from Macedonia." In C. Breytenbach and J. M. Ogereau (eds.), Identity and Authority in Emerging Christianities in Asia Minor and Greece, Leiden, Brill, 217-39.
• 2017: C. Breytenbach and J. M. Ogereau. "Inscriptiones Christianae Graecae (ICG) 1.0: An Online Database and Repository of Early Christian Greek Inscriptions from Asia Minor and Greece." Early Christianity 8: 409-19.
• 2015: "A Survey of Κοινωνία and its Cognates in Documentary Sources." Novum Testamentum 57.3: 275-94.
• 2015: "Methodological Considerations in Using Epigraphic Evidence in Determining the Socioeconomic Context of the Early Christians." In J. R. Harrison and L. L. Welborn (eds.), The First Urban Churches, vol. 1: Methodological Considerations, Atlanta, Society of Biblical Literature Press, 245-75.
• 2014: "The Earliest Piece of Evidence of Christian Accounting: The Significance of the Phrase εἰς λόγον δόσεως καὶ λήμψεως (Phil 4:15)." Comptabilité(S) 6: 1-16. online: comptabilites.revues.org/1503
• 2014: "Paul's Κοινωνία with the Philippians: Societas as a Missionary Funding Strategy." New Testament Studies 60.3: 360-78.
• 2012: "Customs Law of the Roman Province of Asia (lex portorii Asiae)." In S. R. Llewelyn and J. R. Harrison (eds.), New Documents Illustrating Early Christianity, Vol. 10, Grand Rapids, Eerdmans, 95-109.
• 2012: "The Jerusalem Collection as Κοινωνία: Paul's Global Politics of Socio-Economic Equality and Solidarity." New Testament Studies 58.3: 360-78.

3rd encyclopaedia article

• 2024: "Thessalonica I (history of the city)." In Reallexikon für Antike und Christentum 32, vol. 250/257, 493-510.
• 2017: "Κοινωνία - New Testament." In C. Helmer et al. (eds.), Encyclopedia of the Bible and Its Reception (EBR), vol. 15, Berlin, De Gruyter, 433-35.

4. online database

• 2026: C. Breytenbach et al, eds. Inscriptiones Christianae Graecae (ICG): A Database of Early Christian inscriptions. Online at https://icg.uni-kiel.de