Blood donation centers run on critical, time-sensitive data, yet most of them were still managing it in aging, fragmented systems. I led the end-to-end redesign of Bloodlab, a cloud-based LIMS for blood donation labs, shaping the product strategy, defining the UX architecture, and designing the full visual system from the ground up. I also jumped into the codebase to build out the login and signup flows on the frontend, ensuring the first experience users had with the product was as polished as the rest of it. The redesign directly led to the software being licensed and rolled out across Germany by the German Red Cross. A 0-to-1 project that went from a blank canvas to nationwide adoption.