The postdoctoral Fellowship Program FP-RESOMUS (Resolving Solvation with Molecular Ultrafast Science and Technology) is a joint effort of the Swiss National Center of Competence in Research Molecular Ultrafast Science and Technology (NCCR MUST) and the German Cluster of Excellence RESOLV (Ruhr Explores Solvation), and is a Horizon 2020 Maria Skłodowska-Curie COFUND Action. FP-RESOMUS will fund two calls (25 fellowships each) for postdocs who are or will be employed in the Swiss research network NCCR MUST or the German Cluster of Excellence RESOLV.