I am an independent contractor with extensive experience in Semantic Web technologies (OWL, SPARQL, RDF) and Labelled Property Graphs (Cypher, Neo4j). After my PhD in semantic reasoning in 2015 I worked for two years as a post-doctoral researcher on industry-affiliated projects developing novel approaches around ontologies clinical applications. As a Senior Semantic Web Developer at EBI, I was the technical lead on various efforts such as the Monarch Initiative Ontology Working Group or the Phenotype Ontology reconciliation effort, contributing to dozens of ontology projects and knowledge graphs. I lead a number of open source software and data projects, for example, the Simple Standard for Sharing Ontology Mappings (SSSOM, https://github.com/mapping-commons/sssom), the Ontology Development Kit (ODK, https://github.com/INCATools/ontology-development-kit) and various ontologies, such as the Unified Phenotype Ontology (uPheno, https://github.com/obophenotype/upheno) and the Biological Trait Ontology (OBA, https://github.com/obophenotype/bio-attribute-ontology). I am a member of the Open Biological and Biomedical Ontology (OBO) Operations committee and responsible for quality testing (http://dashboard.obofoundry.org/) and metadata curation in the OBO Technical Working Group.