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Managers and Administrators

Presidents of the board of Directors

Frédéric SEBAG
Co-Président of OPEN
@F_Sebag

After having created Groupe Open in 1989, Frédéric SEBAG is co-chairman with Guy MAMOU-MANI. It is implementing an ambitious development strategy, based in particular on innovation and value creation, allowing the company to appear in the top ten of French ESNs today. With 3,700 employees, Groupe Open has become a benchmark player in French Digital Services Companies.
Frédéric SEBAG, holder of a degree in Mathematics, began his career as a Business Engineer in an IT Services Company in 1985.

Guy MAMOU-MANI
Co-Président of OPEN
@guy_mm

Guy Mamou-Mani is the Co-President, together with Frédéric Sebag, of Open Group, which has a workforce of 3,600 and a turnover of €304 million and is one of France's leading digital services companies.
He began his career with CSC-GO International, where his final position was that of Chief Executive Officer and Head of the solutions division at CSC France. 
In 1995, he founded the French subsidiary of Manugistics, a leader in the field of Supply Chain Management and Europe's number one. There he held the role of managing director, in addition to the position of European Head of Services and Marketing until 1998.
Guy Mamou-Mani was Vice-President of France's council for digital technology (Conseil national du numérique) from 2016 to 2017.

Between 2010 and 2016 he headed Syntec Numérique – a trade body for the digital sector (software publishers, digital services companies, technology consultancy companies).

He was also President of MiddleNext, an association of listed mid-cap companies between 2006 and 2010.

He has been a member of France's high commission for gender equality and, together with Tatiana Salomon, spearheaded the #JamaisSansElles movement – a commitment made by men to abstain from any round table that did not include any women.

He has a degree in mathematics and is a former teacher.

He has the title of knight of the Légion d'Honneur.

He is the author of L’apocalypse numérique n’aura pas lieu ['the digital apocalypse will not happen'].

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