The TREX project, in collaboration with the Austrian, Czech, and Slovak National Competence Centres for HPC, is hosting the "Code Tuning for the Exascale" workshop in Bratislava, Slovakia, from June 5th to 7th. This workshop is specifically designed for code developers and focuses on code optimisation. Participants will have the opportunity to engage in tutorials and training activities that emphasize performance, power consumption, and energy efficiency in HPC systems. The workshop also featured hands-on sessions showcasing the TREX CHAMP code and other valuable tools. The main objectives of the workshop are to enhance the practical experience in optimising HPC systems, help participants align their code implementation with HPC objectives, and provide valuable hands-on experience with practical QMC simulations using the CHAMP code. See the official event page for more details at TREX Events.