Roman Iakymchuk is an Associate Professor and a docent (equiv to habilitation) at the Division of Scientific Computing, Department of Information Technology, Uppsala University (UU), Sweden. He is also a part-time Associate Professor at the Department of Computing Science at Umeå University (UmU), Sweden. Roman is co-Principal Investigator of the EuroHPC JU Center of Excellence in Exascale CFD (CEEC) and leads a work package on Exascale Algorithms. He was a part of three other EU-funded projects such as EPEEC, Intertwine, and AllScale and led work packages on the latter two projects. Furthermore, Roman was granted a prestigious Marie Sklodowska Curie Actions Individual Fellowship for the Robust project at Sorbonne University, France. He conducts his research on energy-efficient and reliable numerical solvers, and their use in applications.