Karl Schaeffler

Hi, I’m a French tech enthusiast based in Berlin, currently serving as the CTO at Oneleaf, a mobile wellness app. I’m passionate about building exceptional teams and crafting products that deliver outstanding user experiences. With a strong sense for UX, I thrive at the intersection of technology, design, and innovation.

I began my career as an iOS Engineer, contributing to the development of remarkable products like the GetYourGuide and EyeEm iOS apps. Following that, I played a pivotal role in building and scaling the iOS teams at Blinkist and Trade Republic, significantly impacting their product development and team growth.

Beyond my work in technology, I’m deeply interested in wellness and psychology, which have shaped my approach to leadership and product development. I’ve also worked extensively on remote work best practices, creating environments where teams can collaborate effectively and thrive. Additionally, I’m passionate about exploring macroeconomics and cryptocurrencies, as they offer fascinating insights into how technology shapes the future and influences the way we live and work.

Over the years, I’ve been dedicated to fostering connections in the tech community. I’ve organized more than 200 networking events in Berlin to make the industry more accessible and to support professional and personal development.