During his professional career as a field archaeologist (2008-2013), Sibrecht worked in the governmental and private sector (Belgium and France), where he developed his research skills both on terrain and during post excavation. From 2013 onwards Sibrecht started a PhD project at Ghent University. During this project he investigated Roman stone implements as an important proxy to study socio-economic processes within the Gallo-Roman society (e.g. provenance, distribution networks, technology, etc.).
After finishing his Phd in 2018, Sibrecht continued his academic career with the establishment of a reference collection for stone and ceramics (FWO Hercules project) at the Department of Archaeology (Ghent University). This ongoing FLEPOSTORE (Flemish pottery and stone reference collection) project is a collaboration with the Department of Geology from Ghent University and (co-)supervised by Prof. Dr. W. De Clercq, Prof. Dr. P. Crombé, Prof. Dr. V. Cnudde and Prof. Dr. T. De Cock.