With a background in mathematics and data science, Josip Begic has spent the last decade helping fast-growing e-commerce brands make better marketing decisions. As Head of Growth, he’s managed over $50M in ad spend for leading YC-backed stores, and today he brings that same hands-on mindset to his role as Founder & CEO of Lebesgue. Josip is building AI analytics that cut through the noise - turning store, ad, and competitor data into clear, actionable insights that help e-commerce teams grow profitably.