Sendlinger began his career in the travel industry in 1987 with the founding of a agency specializing in sport and music events. Only four years later Travel Trends, a tour organizer for high-end, authentic travel experiences, followed. In 1993 in Sausalito, California Sendlinger established Design Hotels Inc., a small hotel cooperation with 10 iconic members focused on communications strategies that went beyond traditional tourism marketing. With the growth of its worldwide creative network, lebensart global networks AG was born in Augsburg, Germany in 1998 and went public in 1999. In 2003, the company was renamed Design Hotels AG and in 2004 the headquarters was moved to Berlin. Today, Design Hotels™ represents and markets a hand-picked collection of 260 hotels in over 50 countries. Sendlinger leads the company with an Executive Management Team. In November 2012, Sendlinger was honored at the European Hotel Design Awards for outstanding contributions to the industry. In January 2013, Design Hotels AG received the Special Award from one of the top German hospitality publications, AHGZ (Allgemeine Hotel und Gastronomie Zeitung).