Garyfallos Konstantinoudis is a lecturer at the Grantham Institute - Climate Change and the Environment. He also holds an Imperial Research College Fellowship. Prior to this he was an MRC Skills Development Research Fellow at the MRC Centre for Environment and Health. He did his PhD in Biostatistics and Epidemiology at the Institute of Social and Preventive Medicine (ISPM) at the University of Bern in Switzerland. Garyfallos gained an MSc in Biostatistics at the University of Glasgow and BSc in Mathematics at the Aristotle University of Thessaloniki.

Garyfallos' current domain of research is on estimating the health related burden of climate change focusing on temperatures. Some of his work also include developing methods for calculating excess mortality due to extreme events such as the COVID-19 pandemic or the recent extremely warm summers.