PHILIPPE BERTEROTTIERE
Chairman of the board & CEO
ERIC DEHOUCK
Deputy CEO
KARIM CHAPOT
Technical Vice President
Karim Chapot joined GTT as an engineer in 1999 and has worked in the maritime transportation industry for 22 years. In 2002, he became head of structural calculations and was then promoted to Development Director in 2007. Previously, he held various positions at the Cherbourg and Le Havre shipyards. He graduated in naval and offshore architecture from ENSTA Bretagne (École Nationale Supérieure de Techniques Avancées Bretagne) and completed the Executive MBA program at HEC (Hautes Études Commerciales).

Commercial Vice President
David Colson joined GTT in 2004 and has nearly 30 years of experience, gained primarily in the automotive industry and then with GTT. During his career with GTT, he was a shipyard project manager until 2008 and head of the business development department until 2010, when he was appointed Commercial Director. Previously, he held several positions at APV, ACOME and Valeo Filtration Systems. He graduated in mechanical engineering and business administration from the University of Birmingham (Bachelor of Engineering and Bachelor of Commerce).

Secretary General
Lelia Ghilini joined GTT in 2014 as General Counsel, after a two-year experience at the Ministry of Economy and Finance as special advisor (European Affairs). Admitted to the bars of Paris and New York, she had previously worked for nearly 10 years as a lawyer in mergers and acquisitions at several prestigious international law firms. Lelia holds a DESS in business law and a business law master’s degree (DJCE diploma) from the University Paris II (Panthéon – Assas). She also holds an LL.M from the New York University School of Law. In 2019, Lélia Ghilini is appointed Secretary General.
MARC HAESTIER
Chief Financial Officer
Marc Haestier joined GTT in 2017. He holds a Degree in Applied Economics and a MBA from the University of Louvain and began his career holding various financial positions within Arjo Wiggins between 1985 and 1997, in Belgium and subsequently in the United Kingdom, before joining Alstom in Paris in 1997 as Director of Treasury and Financing. He then moved to Gaz de France in 2004 as Deputy CFO. Since 2010, Marc was CFO of the Infrastructures Business Line of Engie.
SANDRINE VIBERT
Human Resources Vice President
Sandrine Vibert joined GTT in 2019 as Human Ressources Vice President, with over 23 years experience in the Oil and Gas and Transport Engineering sectors. She began her career in various HR positions within the Group Bouygues: Saur as HR Manager, Bouygues Offshore as Onshore Pipeline HR Manager for Europe and Central Asia and then joined Saipem, where she stayed in Italy, as Recruitment, HR Development and Training Director. Certified Coach and Co-development, Sandrine Vibert creates her change management consulting firm and then joined Systra as the HR Director for technical and project management functions at the Group level. She holds a Master in Business Strategy and Human Ressources Management and a Degree in Economic and Social Sciences, University François Rabelais of Tours.
Consult the Board of Directors and Specialized Committees section.anagement and a Degree in Economic and Social Sciences, University François Rabelais of Tours.