Joe Fitzsimons is the founder and CEO of Horizon Quantum. Before founding Horizon Quantum Computing in 2018, Joe held a tenured position as an associate professor at the Singapore University of Technology and Design, where he led the Quantum Information and Theory group. He was also a principal investigator at the Centre for Quantum Technologies, contributing to both theoretical computer science and physics through his research.

Earlier in his career, Joe spent time as a fellow of Merton College, Oxford, and a senior research fellow in the Materials Department at the University of Oxford. During this time, he co-invented universal blind quantum computing, which has since become recognised as an important enabling technology for securing cloud-based quantum computing.

Joe holds a doctorate from the University of Oxford, where his research focused on quantum computing architectures, and a Bachelor of Science degree in theoretical physics from University College Dublin.