top of page


After more than 20 years of experience in strategy consulting, venture capital and retail financial services in Europe, Jean-Gaston de Lassus founded Altissima in 2019. A strategy and transition management consulting firm, specialised in retail services, Altissima provides its clients with agile and flexible leadership assistance, associated with an entrepreneurial touch: ambitious, innovative, tech-driven, results-oriented. Altissima is proud to advise a diversified set of clients in fintech, digital banking, and sustainability-oriented corporates.


With 15 years spent at the executive level of various specialized banks of Crédit Agricole Consumer Finance in France, Germany and the Netherlands, Jean-Gaston has acquired an extended view of international governance issues and today's strategic challenges in the world of financial services. His views are grounded in the hands-on and diversified leadership experience he acquired as CIO, CRO, COO or Head of Business Development. Business transformation has been the red line of his career, as he was leading a merger and cost cutting program, developing new corporate ventures or transforming organisations and business models. In his latest roles, he has been a thought-leader in the massive transformation of the consumer finance industry in France and in the Netherlands, as CEO of the largest Dutch consumer finance specialist.

Today, Jean-Gaston is an enthusiastic and demanding leader with a particular focus on digital transformation, sustainable finance and B2C services at large. Passionate about leadership, languages and cultural diversity, he is used to working in complex international contexts.

Jean-Gaston holds a Master of Science in Technology Policy from the MIT (Boston, USA) and is an Engineer from the Ecole Polytechnique and Ecole des Ponts et Chaussées (Paris, France). He is married and a happy father of five children. He is a keen sailor and mountain hiker, two sports which give him energy and inspiration. A French national, he speaks French, English and Dutch fluently and has a good working level of German.

  • LinkedIn - Black Circle
bottom of page