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The Transition Project Manager is responsible for planning and executing complex IT service transitions , primarily involving the migration of applications, infrastructure, or service scope from one supplier/vendor to another within a large, global enterprise environment. This role is critical in ensuring service continuity, operational stability, and knowledge transfer during supplier transitions and early-life support phases. The role requires a seasoned project manager with solid judgement, credibility with senior stakeholders, and hands-on experience managing large-scale transitions, IT transformations, and application rationalization initiatives . The Transition Project Manager operates in a multi-vendor, global delivery model , working closely with internal IT, business stakeholders, outgoing and incoming suppliers, and program governance teams to deliver transitions on time, within scope, and with minimized risk . PRIMARY DUTIES AND RESPONSIBILITIES Transition & Project Management - Lead end-to-end IT service transition s from incumbent vendors to new service providers across applications, platforms, or infrastructure towers - Develop and maintain detailed transition plan s, including scope, milestones, dependencies, cutover strategy, knowledge transfer, and hypercare - Coordinate transition activities across multiple supplier s, ensuring clear ownership, sequencing, and accountability - Manage transition risks, issues, assumptions, and dependencies, ensuring proactive mitigation and escalation where required - Ensure full alignment between contractual scope, RFP commitments, and operational readines s Vendor & Stakeholder Management - Act as the primary orchestration point between outgoing vendors, incoming vendors, and internal IT team s - Challenge providers where assumptions, staffing, or timelines present delivery or continuity risks - Ensure suppliers adhere to agreed transition methodologies, deliverables, and exit obligation s - Build strong wor .