Marcin Klimaszewski is the founder of gonogo.design and runs Product Build Day, where product teams and non-coders vibe code their next big thing in a day. His rule: "An idea that cannot survive a day is not worth a quarter." With a background in UX leadership and team building, Marcin has scaled design practices, championed accessibility, and helped organisations turn uncertainty into clear product direction. As a mentor and community builder, he brings a practical, fast-moving approach to product, design, and innovation.