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Guillaume de Gantès

Senior PartnerJakarta

Guillaume de Gantès

Senior PartnerJakarta

Leads our Financial Services Practice in Southeast Asia, and helps companies define bold growth strategies and transform their performance in industries ranging from financial services to telecommunications and healthcare

Guillaume first joined McKinsey in Paris in 2000 and worked in the New York office from 2004 to 2013, where he became a partner. He is now based in Indonesia and leads our Financial Services Practice in Southeast Asia.

Examples of Guillaume’s recent client work includes the following:

  • developing the healthcare strategy for a large Indonesian financial-services company
  • redesigning the distribution process of a Southeast Asian bank
  • redefining the financial-services strategy and processes for a large global automobile manufacturer
  • leading a transformation effort for a large US credit company, including an efficiency redesign for core business functions, such as distribution, risk management, pricing, and underwriting
  • defining and launching a performance-improvement program for a recently acquired financial-services distribution network
  • improving the pricing and underwriting processes of a leading insurance, asset-management, and banking provider
  • restructuring and repositioning the retirement unit of a leading diversified financial-services provider

Guillaume speaks English and French and is conversant in Indonesian and Spanish. He is a member of the Global Association of Risk Professionals.

Published work

On the verge of a digital banking revolution in the Philippines,” McKinsey & Company, May 2023

Indonesia and Islamic banking: An interview with Hery Gunardi,” McKinsey & Company, December 2021

Digital banking in Indonesia: Building loyalty and generating growth,” McKinsey & Company, February 2019

Life journey: Winning in the life-insurance market,” McKinsey & Company, March 2014

Responding to the variable annuity crisis,” McKinsey & Company, April 2009


Harvard Business School

HEC Paris
BA, finance