Sean Tierney is a seasoned technology founder and operator based in Lisbon, Portugal, blending hands-on software engineering with a proven track record of building and scaling startups. He is the founder of Stone Soup Vision, which gamifies cooperative problem solving, and Charity Makeover, reflecting a commitment to social impact ventures. As Entrepreneur in Residence at Startup Lisboa, he mentors early-stage companies and helps them nail product-market fit and go-to-market strategies. His leadership spans CEO and director roles across ventures such as JumpBox, Grid7, and Pagely, with a strong focus on growth, sales, and strategic partnerships. With roots as a software engineer dating back to the late 1990s, he combines technical depth with entrepreneurial grit and actively bridges European and North American startup ecosystems.
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