About Chris von Csefalvay

Chris von Csefalvay is an AI researcher and computational epidemiologist specialising in post-training for language models, agentic AI systems, and reinforcement learning from verifiable rewards (RLVR). He is the Principal for Clinical Intelligence and AI at HCLTech.

Chris von Csefalvay is an AI researcher and computational epidemiologist specialising in post-training for language models, agentic AI systems, and reinforcement learning from verifiable rewards (RLVR). He is the Principal for Clinical Intelligence and AI at HCLTech, where he advises the world’s leading life sciences, medical devices and pharma companies on leveraging AI to improve their products and serve their customers better.

Books

Chris is the author of two books:

Research

His research interests span post-training for language models, agentic AI systems, computational epidemiology, and public health informatics. He has published in peer-reviewed journals including Acta Biomedica, Big Data and Cognitive Computing, and Frontiers in Medicine, and his work has been cited in 39 English Wikipedia articles. He is a credited contributor to OEIS sequence A344856 (Jellyfish Heart numbers).

Education and credentials

Chris attended the University of Oxford (Merton College) for both his undergraduate and graduate studies, and holds degrees from Cardiff University and Robert Gordon University Aberdeen, with further studies at the University of Leiden. He is board certified in public health (CPH), a Fellow of the Royal Society for Public Health (FRSPH), and an IEEE Senior Member. He received the Martin Wronker Prize at the University of Oxford.

Professional affiliations

Teaching and service

Chris is a visiting thesis supervisor for students on the data science track of the mathematics programme at the Budapest University of Technology and Economics. He serves as a reviewer for JOSS, Frontiers in Immunology and Frontiers in Medicine, and is a member of the Rocky Mountain MRC of Denver and Colorado’s radiation response MRC.

Media and public engagement

Chris’s work has been featured in the World Economic Forum Technology Convergence Report 2025, The Spectator, and City Journal. He has appeared on the Tech For Good podcast and other media outlets. He writes regularly on AI, post-training, and computational epidemiology on his blog.

Personal

Born in Budapest, Hungary, Chris lives in Denver, Colorado. He is an adaptive multisport athlete, competing in wheelchair rugby, adaptive rowing (category PR1), and the SkiErg (category SIT2), where he holds multiple world records. He lives with neuromyelitis optica since 2015.

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