S1E7: The Triad of Design, Engineering, and Product with Johannes Marbach and Callum Upfield

What does great product work look like when everyone actually trusts each other?In this episode, Karl and Danielle sit down with Johannes and Callum for a candid conversation about what really happens when product, design, and engineering work well together. Both guests share lived experiences from inside teams where things either quietly clicked or slowly unraveled, often based on how early people talked, listened, and gave feedback.Johannes reflects on why knowing the “why” behind the work matters more than the tech itself, especially when you are responsible not just for code, but for people. Callum shares the designer’s side of the story, including the invisible thinking that goes into good design and the frustration of getting feedback too late, when there is no time left to change course. Together, they talk about moments where sharing unfinished work early made everything better, and moments where waiting too long made things harder than they needed to be.The conversation explores trust, feedback, and what it takes to speak with one voice as a team, even when there is healthy disagreement behind the scenes. There are honest reflections on documentation, collaboration, and the relief that comes when teams stop reacting and start feeling steady.This is a grounded, human episode about partnership and progress. If you have ever felt the tension between moving fast and doing good work, or wondered why some teams feel calm while others feel chaotic, this conversation will feel reassuringly familiar.Show Notes