Sinéad Ryan is Chair of Theoretical High Energy Physics at Trinity College Dublin. Her research focus is the numerical simulation of quantum chromodynamics, the theory of the strong nuclear force, in an approach known as lattice QCD. A particular interest of hers is understanding strong exotic matter and the physics of the early universe. Sinéad's research is supported by grants from the EU and national funding agencies and enabled at leadership HPC resources through the US INCITE and European PRACE programmes. She has served as Chair of the PRACE Scientific Steering Committee and is currently vice-Chair of the EuroHPC Infrastructure Advisory Group.