The Senior Director will partner closely with Development Operations, Clinical Operations, Biometrics, Business Operations, Procurement, Legal, Quality, and cross-functional clinical development teams to ensure clinical vendors are selected, onboarded, managed, and held accountable effectively across the portfolio. This role defines and implements sourcing strategies and associated operating models that enable effective clinical trial execution through external partnerships, and is directly accountable for ensuring that CROs, central labs, and other clinical vendors meet performance, quality, and cost targets.