Timewell is a consumer platform where customers build hardbound photo books, record voice stories attached to individual photos, and then scan unique QR codes printed inside the book to listen back - reliably, years later. I architected and built the full stack: the QR generation and resolution system that maps each code to a specific page and user, the media upload pipeline for audio and images, the admin dashboard for order and content management, and the public-facing mobile experience optimized for a cold-open scan (no app install, instant load).