Rachel Delphin

Rachel Delphin serves as Chief Marketing Officer at Block, the financial technology company founded by Jack Dorsey that encompasses Square, Cash App, and other ventures. In this role, she oversees brand strategy, performance marketing, and go-to-market initiatives across Block's diverse portfolio of products, operating at the intersection of fintech, consumer marketing, and data-driven advertising. Her work involves navigating complex multi-brand environments and leveraging modern advertising technology to drive both merchant and consumer acquisition at scale. Delphin's career has been rooted in building marketing functions at high-growth technology companies, with a particular focus on performance marketing, brand development, and customer acquisition. Prior to her current role, she held senior marketing positions that gave her deep experience in digital advertising ecosystems, including programmatic channels, paid social, and measurement frameworks increasingly important in a privacy-first landscape. As a senior operator in the fintech marketing space, Delphin represents a generation of CMOs who must balance brand storytelling with rigorous performance accountability, making her a notable figure in discussions around marketing effectiveness, attribution, and the evolving role of first-party data in advertising strategy.

Last updated Sep 27, 2026 by the ATDb Editorial Team