The team

Founder and CEO

Yvonne Jamal


Yvonne Jamal has a bachelor degree in Business Administration with a specialization in tourism and more than 15
years of experience in the tourism industry. In the past few years she was in a leading position in indirect purchasing at
Zalando SE. Since then she has been volunteering as a regional board member at the Federal Association for Materials
Management, Purchasing and Logistics (BME) in the area of ​​sustainable procurement. (more)

Founder and Scientific Director

Prof. Dr. Sandra Rochnowski


Prof. Sandra Rochnowski, MBA, is a travel agent and business economist with over 15 years of experience in tourism and applied science. She studied Business Administration with a specialization in tourism. Prof. Rochnowski gained experience as Head of Marketing in the health tourism and hospitality industry. Her master thesis is about the climate neutrality in the hotel industry. (more)

Research Assistant

Sarah Wörle


Sarah Wörle supports us in our scientific work, especially in research, evaluations and reports. She successfully completed her Bachelor of Arts in Tourism Management at the University of Heilbronn and is currently writing her Master thesis at the University of Sustainable Development in Eberswalde. Through various, partly international internships, she has already gained professional experience with several tourism service providers.

Communication Manager

Claudia Berti


Claudia Berti worked at various media companies in Berlin in the communication, eLearning, and ePublishing. During a traineeship in Marketing & Sales at Stiftung Warentest she initiated and developed the current Sustainability Report in accordance with the German Sustainability Code (DNK). (more)

Strategic partnerships


We cooperate with great partners: