This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Medical Director based in the United States. This is a senior clinical development leadership opportunity focused on advancing innovative hematology and oncology programs from early development through registration and beyond. The role combines medical and scientific leadership with hands-on involvement in global clinical trials. You will shape development strategies, guide study execution, and ensure high-quality clinical deliverables across multiple functions. Working closely with clinical operations, biometrics, safety, regulatory, translational research, and external partners, you will help translate clinical data into meaningful development decisions. The position also offers opportunities to build relationships with investigators and key opinion leaders and influence broader clinical research capabilities. This is an ideal environment for an experienced physician-scientist who thrives in a collaborative, international, and fast-moving setting.