In this episode #47, we are talking with Marvin Felder, Founder of Calenso (, an online appointment scheduling solution for efficient appointment processes. Marvin shares the story of building and scaling Calenso to over 100K users in EU and worldwide, how they adapt to the enterprise customers’ needs, and navigate the roadmap accordingly. Marvin talks about the reasons Calenso remained bootstrapped and all the advantages and challenges it brings. He also discusses the importance of sharing knowledge in the founders’ community and how real-life events help to get out of the bubble and explore what everyone else is doing and how they can be helpful to each other.

Head of Growth,