20 ESRs (Early Stage Researchers) who want to apply for a PhD project within the Amsterdam Rheumatology Center for AutoImmune Diseases (ARCAID; project 847551) funded by a European Horizon 2020 MSCA-COFUND grant. ARCAID features an international, interdisciplinary and intersectorial approach to train a diverse group of ESRs to become the future leaders in autoimmune rheumatology research and creators of improved bench-to-bedside approaches.