Lead Peptide Medicinal Chemist Radiopharma

Mariana Oncology, Inc. seeks a Principal Scientist I, Medicinal Chemistry to join our Discovery Chemistry team. You will lead design and synthesis of peptide-based radiopharmaceuticals, guiding hit-to-candidate workstreams and serving as a technical and strategic leader. You will mentor junior scientists, manage external CROs, and collaborate with biology, radiochemistry, DMPK, and pharmacology to advance programs, while ensuring safety and timely delivery.