Pierrick Guinguene

GroupM is the world's largest media investment group, managing over $60B in annual media spend.

• Spearheaded global ERP transformation, consolidating 40+ legacy systems into a unified Dynamics 365 platform, achieving 10% cost savings.
• Established enterprise-wide master data governance frameworks across 60+ markets, elevating data quality, compliance, and strategic decision-making.
• Introduced SAFe Agile delivery model across 8 global service lines, accelerating time-to-market and improving cross-regional execution.
• Reduced SaaS application run costs by 22% while enhancing scalability and risk control.
• Enabled global financial transparency through the SaaS transition of credit risk systems.
• Member of GroupM CIO Board & WPP Financial Systems Board.

• Harmonised campaign, finance, and agency data across markets; introduced scalable applications to replace fragmented tools.
• Extended proven digital platforms from APAC to EMEA (Turkey, Belgium, South Africa, Austria).
• Launched cookie data platform enhancing campaign attribution and compliance.

• Executed ERP migration covering 80% of revenue base.
• Launched new e-commerce and entitlement platforms, delivering >£300K in incremental revenue.
• Achieved full PCI compliance; drove Lean Agile transformation across teams.
• Served on CDS Global Board of Directors.

• Consulted on digital strategies for La Depeche, IBM, and L'Oréal; led PoCs in mobile and data analytics.
• Delivered organizational and IT transformation blueprints to media and consumer firms.

• Launched Emploipublic.com, capturing 53% market share in Year 1.
• Delivered €4M+ in incremental CRM-driven revenue over 3 years.
• Boosted customer loyalty to 87% through operational redesign.

• Directed transformation of content, platforms, and customer operations across legal and regulatory publishing.