From a little bit of research, it seems very apparent that prior experience is required for applying for a role in clinical research. I agree with amandaally1029 thoughts that it varies for different roles. However, a sponsor actually requires the company to keep all its clinical researchers CV’s on file because they request to see the researcher’s skills who will be monitoring their study. Getting a role in big pharma company with no experience is slightly easier in this case as they can absorb more people and offer internships or trainings. But CRO’s or smaller companies usually require a good amount of experience so that it is easier for them to gain a project.