John Elvesjö founded Tobii by repurposing optical sensor technology from a research institute and later systematically finding paying customers, giving him deep insight into helping technical founders make the leap from cool technology to validated business models. He designed node.vc as an entrepreneur-led fund backed by over 70 successful Nordic founders and operators, positioning himself to work side-by-side with founders on negotiations, hiring, and strategy rather than providing only board-level oversight.