This position paper provides an insightful look into the strategic approach of the European Open Science Cloud's (EOSC) Association Task Forces on Research Careers and Curricula towards promoting Open Science in Europe. It highlights EOSC's reliance on research intermediaries to drive cultural change towards FAIR principles (Findability, Accessibility, Interoperability, Reusability) and Open Science practices. Furthermore, this paper details the tailored recommendations these task forces have developed over two years to effectively engage in Open Science processes. It showcases their dedicated two-year effort in designing strategies that empower research intermediaries to adopt, implement, and promote Open Science, thereby fostering the vision of digital transformation in European research.