  We present the collaborative model of ESiWACE2 Services, where Research
Software Engineers (RSEs) from the Netherlands eScience Center (NLeSC) and Atos
offer their expertise to climate and earth system modeling groups across
Europe. Within 6-month collaborative projects, the RSEs intend to provide
guidance and advice regarding the performance, portability to new
architectures, and scalability of selected applications. We present the four
awarded projects as examples of this funding structure.
