Guy Mamou-Mani is a businessperson who founded Groupe Open SA and who has been at the head of 16 different companies. Currently, he occupies the position of Co-Chairman & Deputy Chief Executive Officer at Groupe Open SA, Co-Chairman at Open SAS, Chief Executive Officer for La Netscouade SAS and President & Director at Groupe Open PSF Luxembourg (which are all subsidiaries of Groupe Open SA), Chairman at Gadax SAS and Managing Director at PEA Consulting SAS. Mr. Mamou-Mani is also on the board of MiddleNext (former President), Conseil National du Numérique and New Technology Network Team Rotterdam BV and Associate Director at SCI SMS 2006 and Manager at Aneljoadel Sc.

He previously held the position of Chairman of Sylis France SAS, Chairman of TEAMLOG Consulting SAS, Chairman of Syntec Numérique, Chairman at Mco Finances SAS, Chairman-Supervisory Board for Sylis SA, Co-Chairman at TEAMLOG SA, Chairman of Qualitech SAS, Chairman & Chief Executive Officer at CSC France SA and President & Director at Groupe Open Belgium SA.