Stefan Jannsen

Stefan Jannsen is a seasoned product management professional with extensive experience across multiple industries, currently serving as Product Lead - POS Lite and previously as Senior Product Manager - Merchant Growth at SumUp since January 2020. Prior roles include Senior Product Manager - Personalisation at YUNAR by Ambidexter, Head of Product at ARGO Trade Solutions, and Product Manager roles at MeteoGroup, where key achievements included executing market entry strategies and managing product development. Stefan’s background spans consulting positions at organizations such as Apricum and Ecofys, focusing on strategic growth and energy policy in the cleantech sector. Stefan holds a Dipl.-Ing. in Mechanical Engineering and Energy Engineering, an MBA from RWTH Aachen University, and an MS in Energy Engineering from Tsinghua University, supplemented by UX design training from CareerFoundry.