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Antoine Leboyer

President and CEO

Geneva, Switzerland

Antoine has seen Information Technology from all sides by working for vendors of all sizes. After 12 years in sales and marketing positions at IBM, he started the European Indirect operations of Candle Corporation. He worked for startups in software distribution and mobile phone billing software. In his most recent position he was Senior Vice President of Baracoda, the leading producer of Bluetooth industrial devices. 

Antoine holds an engineering degree from the Ecole Superieure d'Electricité in France and an M.B.A. from Harvard Business School. He sits on the board of the Geneva Reformed Synagogue.

He is co-author of the book "Building Routes to Customers: Proven Strategies for Profitable Growth." In his spare time, Antoine is a frequent contributor to


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Yannick Goubet

Vice President of Global Sales

Geneva, Switzerland

Yannick Goubet is responsible for leading the company's global sales initiative. He joined GSX in 2009 after several years of sales and client relationship management at IBM and Dell.  He has extensive knowledge about server and blade infrastructure, as well experience in managing worldwide distribution channels.

As a huge fan of sports, Yannick applies the values he has learned from competition to his team, partners and clients. He approaches daily and long-term strategy and achieves success by anticipating and reacting quickly to challenges, building trusting relationships and possessing the overriding will to achieve. Yannick has a Master's degree in Sales and Marketing from Toulouse Business School.



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Gary Steere

Chief Operating Officer

Boston, USA

Gary has nearly 20 years of experience in Information Technology. He has held director level positions in a variety of roles ranging from product management and long term product strategy to leading services delivery teams. Gary has always maintained a passion for delivering an exceptional user experience in complex scenarios. This resulted in frequently working on customers’ needs surrounding the integration of Microsoft products and services with a wide array of third-party products. Nearly 7 years of his career related to helping companies integrate IBM’s groupware products with, or migrate to, Microsoft Exchange Server and Office 365.

Gary is one of an elite group of individuals worldwide who is both a Microsoft Certified Solutions Master: Messaging and a Microsoft MVP. This group represents a set deeply technical individuals on Microsoft Exchange and Office 365 who willingly share their time and knowledge with the technical community.  



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Jean-François Piot

Vice President Product Marketing

Geneva, Switzerland

Since 10 years, Jean-François Piot, is responsible for articulating the vision of GSX product range and translating these into product and marketing strategy. His experience in IT processes and Service Management projects comes from previous business development positions at international IT Service Providers. 

He holds a master degree from the Grenoble Graduate School of Business.

In his spare time, he loves assembling and dissembling his old American Trans Am.