My work for the German "Fundmünzen" project introduced me to the importance of the evidence of coin finds for our understanding of many aspects of the ancient world, and at the Römisch-Germanische Kommission I have been able to integrate my work more closely into the archaeological domain. In particular I work on the coinage of the late pre-Roman Iron Age in the West, and of the Roman Iron Age in northern and central Europe. The database that I have developed together with Karsten Tolle from the Big Data Lab of the Goethe University Frankfurt, Antike Fundmünzen in Europa (AFE-RGK) serves as the numismatic module for the Corpus der Römischen Funde im Europäischen Barbaricum (CRFB)

Databases have long been a major interest (my first coin-find database was programmed with DBaseIII+), and this has led to an interest in the possibilities of intergrating data from disparate sources. In 2011 I started working with the linked open data project Nomisma.org, and am now on the Scientific Committee of Nomisma.org. I am also co-chair of the DARIAH-EU Digital Numismatics Working Group, and am convenor of the European Coin Find Network (ECFN), a network to encourage cooperation and dialogue between institutions working on coin finds, in particular digital aspects.

Externally funded projects that I have been involved in include Online Coins of the Roman Empire (OCRE), funded by the National Endowment for the Humanities (NEH), IMAGMA: Imagines Maiestatis. Barbarian Coins, Elite Identies and the Birth of Europe (a DFG/NCN Beethoven project), the EU-Horizon 2020 projects NETcher: Network and Digital Platform for Cultural Heritage Enhancement and Rebuilding and ARIADNEplus, and the BMBF collaborative project ClaReNet: Klassifikationen und Repräsentationen für Netzwerke. Von Typen und Merkmalen zu Linked Open Data bei keltischen Münzprägungen.