Sven Severin, born in 1977, has been working in marketing since 1995. He is a professionally trained advertising consultant and SGBS-certified advanced management expert. He chose to specialise in online activities and digital marketing very early on in his career. In this role, he was responsible for both national and international budgets in various sectors, including media, consumer electronics, financial services, tourism and industrial engineering. His work concentrated in particular on KPI-based systems for optimising online services.Initially working as a customer adviser, Sven Severin was then appointed director of a medium-sized advertising agency in Hamburg, where he was responsible for the Online department. During this period, he also studied part-time at the St. Galler Business School, where he focussed on the Balanced Scorecard framework.In 2008, Sven Severin became a managing partner of Marshall Stewart & Delaney. He is a member of numerous organisations and associations, including Bitkom (Germany's digital association), Bundesverband Digitale Wirtschaft (BVDW) e.V. and "Versammlung eines ehrbaren Kaufmanns zu Hamburg e.V.".Since 2021, Sven Severin has been running the Instagram account wine.vino.wein, one of the largest private German Instagram accounts on the subject of wine and wine culture with currently more than 10,000 followers.