Senior Project Manager - Service Management Platform

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Why we're hiring: This role is responsible for leading the end-to-end delivery of WPP’s Service Management re-platform programme, replacing the current platform with a modern, AI-enabled service management capability. You will be accountable for the planning, coordination, governance, and execution of a large-scale platform transformation, ensuring all workstreams are delivered in a controlled, structured, and timely manner. Working under the Director of Service Delivery, you will coordinate cross-functional teams and strategic implementation partners, driving delivery across technology, process, data, integrations, and organisational change while ensuring alignment to scope, timelines, budget, and business outcomes. This role requires a highly experienced programme delivery leader who can establish strong governance, manage complex dependencies, mitigate risk, and successfully deliver one of WPP’s most significant Service Management transformation programmes. What you'll be doing: Programme & Project Delivery Lead the end-to-end delivery plan for the Service Management Platform programme. Define, construct, and maintain detailed, integrated project plans, identifying critical paths, key milestones, and cross-functional dependencies. Ensure all delivery activities align perfectly with the agreed scope, budgets, timelines, and priorities defined by leadership. Successfully coordinate multiple concurrent workstreams, including platform architectural rebuilds, data migration, global configuration, and multi-market rollouts. Execution Management Drive a high-performance culture of execution discipline and accountability across all hybrid and cross-functional delivery teams. Proactively track workstream progress, pre-emptively identify delivery roadblocks, and swiftly resolve blockers. Establish clear ownership and definition of “Done” across all technical and operational project tasks. Maintain tight change-control management over project scope to prevent scope creep while remaining agile. Partner & Vendor Coordination Act as the primary operational integration point with key strategic partners, including Kyndryl and ServiceNow. Align external delivery methodologies and delivery schedules with WPP's internal technical teams and business targets. Strictly track partner deliverables, ensuring contractual and execution commitments are met. Establish clear pathways for early escalation of partner-related risks, gaps, or dependencies. Governance & Reporting Design, implement, and lead robust programme governance structures, including Steering Committees, weekly delivery forums, and peer reviews. Synthesise complex data to provide transparent, clear, and highly professional reporting on project progress, risks, issues, and dependencies. Own and actively manage the programme RAID log, ensuring risk mitigation plans are executed. Deliver structured, data-driven, and polished executive-ready updates for senior leadership. Planning, Adoption, and Rollout Orchestrate integrated sequencing plans across all workstreams to prepare the business for successful transition-to-service. Coordinate deployment readiness activities…