Who are the evaluators of the Marie Curie Intra-European Fellowship proposals? Other academics ? How are they selected ?
Who are the evaluators...? I am. Along with a few hundred other people, of course! The evaluators ("experts" in EU jargon) are mostly academics from across Europe, with a decent number of scientists from industry, government, etc.
How are they selected? There is an open application process to become an EU H2020 expert. You fill out a form on the H2020 website, where you detail your scientific expertise, list your publications, grants etc. Then there is some selection process where, if your profile matches a vacancy on one of the evaluation panels, you get invited to be a panel member.