Jean-François Treille Partner

Jean-François Treille

Professional Background

Jean-François Treille joined Mazars in 2005 and became a Partner in 2011. Since 2014, he has been leading the Operational Performance Advisory teams.

He holds degrees from Sciences Po Lyon, a Master’s degree in Modern Literature (Université Paris IV–Sorbonne), and a Master’s in Human Resources Management (CELSA).

Transformation & Performance Expertise

Jean-François specializes in organizational transformation and operational performance improvement.

He supports both public and private sector organizations in designing and delivering large-scale transformation programs, including:

  • Operational efficiency and performance optimization
  • Organizational redesign and change management
  • Public service modernization initiatives
  • User and employee experience improvement

Sector Coverage & Public Transformation

He works with a wide range of stakeholders, including:

  • The French State and public administrations
  • Public enterprises and agencies
  • Local authorities (collectivités territoriales)

Private-sector organizations

His sector expertise spans:

  • Education
  • Sports and culture
  • Energy transition
  • Transport
  • Social cohesion and public services

He has also coordinated Forvis Mazars’ advisory work in public sector modernization programs since 2014.

Areas of Expertise

  • Operational Performance & Efficiency
  • Public Sector Transformation
  • Organizational Change Management
  • Large-scale Program Management
  • Public Policy Implementation Support
  • Education, Transport, Energy & Social Sector Advisory

Jean-François Treille combines strategic vision, public-sector expertise, and change management capabilities to lead complex transformation programs focused on improving organizational performance and stakeholder experience.

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