Karsten taught me the value of pragmatism and efficiency. Be cross-functional and collaborative but delivering value to the customer is paramount.
Working with him made me a better designer and person. His passion for great design is infectious, as is his ambition and optimism which pushes you to aim higher and, as a result, reach grander heights as a team.
The personal relationship he has with every single colleague and the occasional tough love he provides lighted a fire in me. He made me and every member of the team a better designer, professional, and person.