Admir Greljo is an Associate Professor of Theoretical Particle Physics and Cosmology at the University of Basel. He earned his undergraduate degree in theoretical physics from the University of Sarajevo in 2011 and completed his Ph.D. at the University of Ljubljana in 2014, based on research conducted at the Jožef Stefan Institute. He then carried out postdoctoral research at the University of Zurich (2014–2017) and Johannes Gutenberg University Mainz (2017–2018), before joining CERN as a senior research fellow (2018–2020). In 2020, he received the SNSF Eccellenza Professorial Fellowship and started a junior research group at the University of Bern. Since February 2023, he has been at the University of Basel, initially as a tenure-track assistant professor. After a successful tenure review, he was promoted to Associate Professor in August 2025.

Our group studies the laws of Nature at the shortest length scales accessible at high-energy colliders, such as the Large Hadron Collider at CERN. We develop novel theoretical methods to interpret experimental data and effectively bridge theoretical ideas with experimental results. In addition, we construct explicit theoretical models beyond the Standard Model to address profound open questions, such as the origin of the three generations of matter particles and their mass hierarchy. We study the implications of such proposals for particle physics and cosmology, steering upcoming experimental endeavors.