Dr Guillaumin is a Tenured Professor in Emergency and Critical Care at Colorado State University. After graduating from the National Veterinary School of Nantes, France, Dr Guillaumin pursued a small animal rotating internship at the National Veterinary School of Alfort, near Paris, France. After graduation, he worked in both private practice emergency settings and academia for several years before moving to the US in the early 2000s. Dr Guillaumin continued his advanced training in Emergency and Critical Care by working as a clinical instructor at Cornell University and then completed his ACVECC residency at the University of California, Davis. After his residency, Dr Guillaumin was a clinician, teacher and researcher at the Ohio State University for 10 years. There, he also acted as the Blood Bank Director. In 2015, Dr Guillaumin was recognized as an invited diplomate of the European College of Veterinary Emergency and Critical Care. Since 2019, Dr Guillaumin has been working at Colorado State University. His clinical and research interests include point-of-care ultrasound, hemostasis, especially thrombosis and thrombolysis, and sepsis and septic shock. Dr Guillaumin is a former Chair of the ACVECC residency training committee, former the Chair of the Joint Committee, as well as a current member of the ECVECC Education Committee.