Julien has a PhD in computer science from the University of Geneva in the field of machine learning. He worked 1 year in the financial sector, and in 2009 he joined Fasteris , a biotech startup pioneer in genomic sequencing with high-throughput instruments while the technology was only emerging. In 2012, after almost 4 years at Fasteris, he joined the faculty of medicine as an embedded bioinformatician. He is now coordinating the platform of bioinformatics and data analysis at the faculty of medicine.