Mathieu leads the Data team at GetYourGuide and formerly was a LinkedIn data scientist and engineering manager. GetYourGuide is a global marketplace for tours and acrivities based in Berlin, with more than 250 employees. Mathieu is also an active open-source contributor and co-founded Gephi, an award-winning large graph visualization platform. At LinkedIn, Mathieu worked on data products such as LinkedIn Skills, relevancy pipelines using Hadoop and large graphs processing projects. Mathieu presented his work at numerous conferences, most recently QCon London in 2016 and WebSummit Dublin in 2015.