Spending over a decade in the Alpine Winter Sports Industry with the agency Young Mountain Marketing, Hartwin was responsible for the Overall Marketing and Communication Development of the company and its brands. On the digital agenda, he has established the digital architecture of the company and designed, crafted, supervised, accompanied and implemented projects such as a mobile Social Network, a Multi-Camera System that sends videos directly onto the smartphones of skiers and snowboarders, and much more. As of October of 2020, Hartwin is responsible for the Marketing, Communication and Events of the Silicon Alps Cluster in southern Austria, which is home to Austria's leading technology and innovation companies and connects companies, research labs and universities in their joint focus to make a better world through smart and intelligent electronic based systems on the highest level.