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Berthil Ch Heyser is a seasoned professional in the aviation industry, currently serving as an Airlines Consultant focused on environment and sustainability at ENVISA since January 2024 and as an Entrepreneur at ECSTERE France since February 2023. Prior experience includes a tenure at Lufthansa Group for Business from November 2014 to January 2023, where roles encompassed Sustainability Coordinator for EMEA and Head of Business Development & Market Steering for the France Benelux region, overseeing team management, strategic development, financial objectives, and joint ventures. Berthil's earlier career at Lufthansa (German Airlines) from September 2003 to October 2014 involved managerial positions in business development, optimization, and sales coordination across Europe. Education includes an Executive Certificate from HEC Paris and further studies in corporate finance and forest management.