Former co-founder of Global Fashion Group, Zalora and Rocket Internet Group, Magnus Grimeland, CEO of startup generator Antler, knows how to scale startups. In this interview we talk about the key qualities Magnus looks for in a startup founder and the process they take startups through to validate the business model. We discuss the importance of challenging assumptions, stepping outside your comfort zone in everything from building your team to getting to the first sale. We also touch upon Magnus's philosophy to business and life, his time as a Norwegian Navy Seal and his passion for extreme sports from ice climbing to Ironman triathlon.