Prior to joining Experimentica Ltd. in 2020, he served as Chief Business Development Officer at Balmes Transplantation SAS (now Kinathera SAS), an early stage pharmaceutical company focused on the prevention of organ ischemia-reperfusion injuries. Guillaume also held several pharmaceutical Business Development positions at Capsugel, Institut Pasteur of Shanghai – Chinese Academy of Sciences, Eurobiomed life sciences cluster, and as a Consultant.