Holger Knublauch is lead developer at TopQuadrant and original developer of the TopBraid product family. He has extensive hands-on experience with programming semantic technology tools, editors and algorithms. Holger also created various RDF-based languages including SPIN which later became one of the foundations of SHACL. He served as lead editor of the W3C SHACL standard. In a previous role as a Post-Doc at Stanford University, Holger helped develop one of the first editors for the OWL Web Ontology Language.