The Senior/Principal MSL will serve as a field-based scientific and clinical expert, developing trusted relationships with healthcare professionals (HCPs), key opinion leaders (KOLs), researchers, and other healthcare decision-makers. This role is well suited for an experienced field-based Medical Affairs professional who is passionate about rare diseases, enjoys building meaningful relationships within the medical and scientific community, and thrives in a collaborative, growing organization focused on improving outcomes for patients with significant unmet needs.