Senior Martech Project Manager H/F - LittleBig Connection (part of Mantu)

What they needContextPreferred location: Lille (Hybrid)Other possible location: Paris Our mission is to deliver seamless, personalized, and high-impact customer experiences across all physical and digital touchpoints.To support our 2030 strategic roadmap, we are initiating a major transformation of our global MarTech ecosystem.To lead this high-impact strategic phase, we are hiring a Senior MarTech Project Manager.Working in close collaboration with an external strategic consulting partner, you will serve as the internal, objective driver of this transformation. You will orchestrate our global stakeholders, align technical and business requirements, oversee architectural scenario evaluations and target operating model for our future-state customer platform.MissionsAct as the lead internal coordinator alongside our external strategic consulting agency to drive project execution, timelines, and deliverablesEnsure absolute objectivity and alignment between external benchmarks/recommendations and the company's operational reality and long-term business goalsMaintain rigorous oversight over project workstreams: current-state technical audit, target architecture scenario evaluations, Total Cost of Ownership (TCO) modeling, and operating model designOrchestrate cross-functional alignment across Global and Regional Business teams, Digital Product & Engineering, Legal / Data Privacy and FinanceBridge the gap between centralized digital domain guidelines and the local execution needs of 65+ existing markets and future expansionsPrepare high-level decision frameworks, risk assessments, and progress dashboards for domain leadership and executive steering committeesEnsure internal requirements across key strategic pillars are comprehensively structured and evaluated:Omnichannel messaging & CRM: real-time engagement, automated personalization, AI decisioning, and multi-channel orchestrationCustomer Data Platform: unified customer profiles, identity resolution, and seamless data pipelines feeding e-commerce, paid media, customer care and Sports XPMulti-market governance: flexible architecture balancing global data compliance with local market autonomyEnsure decisions are aligned with Tech and Data architecture principlesManage technical stakeholders to ensure non-functional requirements are part of the responsibilitiesCo-lead the financial analysis and 3-to-5-year TCO modeling for target architecture scenarios, assessing software licensing, migration efforts, integration costs, and run operational expensesWorking ConditionsLocation: LilleRate: 590€ per day (TJM)

Profile wanted8+ years leading complex, enterprise-scale digital transformations, MarTech evolutions, or major software evaluation programs within global retail, e-commerce, or multi-market organizationsDeep understanding of enterprise CRM platforms, CDPs, composable/MACH architectures, and customer data integration patternsProven track record in leading enterprise-scale RFPs, vendor selections, and co-piloting strategic projects with tier-1 consulting agencies while ensuring internal control and total neutralityStrong leadership and facilitation skills, capable of navigating a complex, matrixed global organization and building consensus between technical teams and business unitsComfortable analyzing complex enterprise software cost structures, licensing models, and ROI/TCO frameworksFluent English (working language) and French are required