We believe that the ERN will both benefit from and serve as a testbed for Computer science research. As we strive to develop solutions focused on supporting the vision and mission of the ERN, many of the challenges the ERN will face will lead to questions that ultimately become interesting CS research projects on topics such as ontologies and knowledge representation, workflow analysis, federated AI/ML, domain-specific programming languages, to architecture, networks, systems, and security. The ERN will also become a testbed for CS experiments (Measurement Monitoring, Self Optimizing Systems) and will leverage existing NSF funded projects (FABRIC, Open Cloud, CC*) leading the way to become an instrument to connect other research instruments or platforms. In this session the focus will be on how computer science research can play an important role in defining the ERN and to form a working group to focus on the different CS related projects to be included in the Mid-Scale proposal.