The Jülich Supercomputing Centre (JSC) is advancing European high-performance computing by evolving cutting-edge systems such as JUPITER, and integrating AI as well as quantum technologies to tackle complex scientific, societal, and industrial challenges. At the heart of Europe’s scientific computing landscape, the Jülich Supercomputing Centre at Forschungszentrum Jülich (Jülich, North Rhine-Westphalia) has grown from a national computational science hub in the 1980s into a global powerhouse of high-performance computing (HPC), artificial intelligence (AI), and emerging quantum technologies. With a long legacy of innovation, strong collaborations across academia and industry, and a firm commitment to advancing Europe’s digital sovereignty, JSC is shaping the next era of HPC-enabled scientific discovery. Building Europe’s HPC future JSC’s journey began with early adoption of large-scale computing for scientific research, helping position Germany among the pioneers of computational science. Over decades, JSC cultivated an ecosystem that blends national research priorities with European collaborations, academic partnerships, and industrial use cases – from climate science and materials modelling to energy systems and life sciences. A hallmark of JSC’s approach has been its ability …