Co-Founder
Guy is a technology entrepreneur specializing in Israeli fintech innovation. His expertise lies in building structured, technology-driven financial products that translate regulatory and operational complexity into scalable digital platforms.
Over the past decade, he co-founded and led SentrySite, an engineering-driven technology studio focused on custom system development across a wide range of industries. For more than 10 years, SentrySite designed and delivered both complex and streamlined digital infrastructures, tailored to the unique operational needs of public institutions, academic organizations, startups, and growing companies.
Guy led end-to-end initiatives spanning product strategy, system architecture, UX design, and the implementation of mission-critical workflows, building systems designed to support real-world business processes at scale.
He is a co-founder of Happ and is actively involved in product and platform development.
Born and raised in Haifa, Israel, Guy served as both a member and instructor in the Israeli Scouts youth movement. He currently serves as a Major in the Israel Defense Forces Reserves and lives in Tel Aviv, Israel.
Written by Guy Ben Ari
In 2026, “creator” increasingly means independent business, not just a social account. This article maps the shift, the numbers behind…
Complete screen-by-screen breakdown of the Happ registration and identity setup experience including validation rules and system transitions.
Guy Ben Ari
When a reworked fashion designer was invited to present his pieces at a major runway show, the spotlight felt earned. The legal questions around brand…
Written by 
Written by