the team

Sébastien Lefebvre

Sébastien Lefebvre founded Mesagraph in 2010. As CEO, he leads the company to deliver products and services that harness the power of social media to help organizations and individuals make faster, better decisions.

Prior to founding Mesagraph, Lefebvre held executive positions with innovative companies, including Mandriva, Linbox and Videotron. He was awarded a Masters of Computer Science and Engineering at the University of Nancy.

Cédric Delfosse

Cedric Delfosse is the Chief Technology Officer at Mesagraph. He drives the evolution of software system architecture and design of Mesagraph’s products to meet customer, operational and software-engineering requirements. He is the lead engineer for the initial release Meaningly, the premier Web-based application for real-time search and discovery on Twitter.

Prior to Mesagraph, he was the software product architect at Mandriva, Linbox and Software Engineer at Free and AlterSoft. He graduated from the University of Nancy and University of Metz with a master’s degree in computer science.

Guy Hugot-Derville

Guy Hugot-Derville is the Chief Scientist and Co-Founder at Mesagraph. He shapes and directs Mesagraph technology strategy and leads the company’s research into new products and technologies with partners like Orange Telecom. As cofounder of Mesagraph, and the first to deliver a topical graph engine, Hugot Derville is on the forefront of semantic search and discovery engines, popularly known as next-generation “pull” capabilities.

Prior to Mesagraph, he was resident at LeCamping incubator and a software engineer at Port25 Solutions, Inc.He was awarded a Bachelors of Science in Engineering at Polytechnical University in Paris and a Masters of Computer Science at Cornell University.

Anthonin Bonnefoy

Anthonin Bonnefoy is Platform Software Engineer at Mesagraph. Prior to joining Mesagraph, Anthonin held engineering positions at MLState and Orange.

Anthonin graduated from ISIMA with a master's degree in computer science.

Dr. Alexandre Passant

Alexandre Passant is founder and CEO of seevl, a start-up in the music and technology area, aiming at letting people discover music they will love. He has more than 10 years of experience in Web technologies R&D;, leading research projects funded by Cisco and Google among others and participating in various Semantic Web standardization activities in W3C. He is also an Associate Researcher at DERI, NUI Galway, the world's largest Semantic Web research institute, where he was previously a Research Fellow and Unit Leader.

Based on his expertise on Social and Semantic Web technologies, Alexandre is advising Mesagraph on R&D; and Web standards issues.