Programme Lead - Ad Server Migration (12 Month FTC)Location: London (Brook Green) - Hybrid (3 days a week on site)About the RoleWe''re looking for an experienced Programme Lead to deliver a business-critical ad server migration within a live, revenue-generating environment.This role is accountable for ensuring a zero-disruption transition of ad serving capabilities, protecting revenue, maintaining operational continuity, and setting up a scalable platform for future growth.You will act as the senior integrator across Technology, Product, Commercial and external partners, driving alignment, decision-making and delivery across a complex, high-stakes programme.What You''ll Be Responsible ForProgramme Leadership and DeliveryOwn the end-to-end migration programme: scope, milestones, dependencies, risks, budget and outcomesLead all phases: discovery, design, build, migration, testing, cutover and stabilisationDeliver a seamless transition with minimal commercial or operational disruptionStakeholder and Governance ManagementAct as the single accountable owner for senior stakeholders across Technology, Commercial, Operations, Finance, Legal and MarketingEstablish and lead governance forums, including steering committees and risk escalationProvide clear, executive-level reporting on progress, risks and trade-offsAd Tech and Platform MigrationPartner with Product, Engineering and Architecture to migrate core ad serving capabilities (trafficking, targeting, reporting, billing)Oversee mi