Where rigorous thinking meets operational experience.

Udi Barkai is an Israeli entrepreneur, digital business executive, and PhD researcher at Tel Aviv University, with extensive experience in digital marketing, advertising technology, mobile applications, strategic management, and business development.

He is the Co-Founder and CEO of Cellosite, a mobile app marketing company founded in 2013, providing services in user acquisition, app store optimization, retention, marketing automation, analytics, and digital growth strategy. His professional background also includes involvement with YoYo – Data Driven Technology, a digital advertising business specializing in audience targeting, data management, retargeting, and programmatic advertising.

Alongside his business leadership, Udi conducts doctoral research at Tel Aviv University at the intersection of information systems, artificial intelligence, digital consumer behavior, and business innovation. His research interests reflect the practical challenges he encounters in the digital economy — the role of AI in influencing user decisions, app discovery, mobile advertising effectiveness, and platform-mediated consumer journeys.

He holds an undergraduate degree in Economics and two master’s degrees — in Business Administration and in Technological Education — alongside doctoral-level research. His professional philosophy emphasizes connecting academic evidence with practical business implementation.

Connecting academic evidence with practical business implementation.

In my own words

For more than a decade I’ve worked inside the machinery of digital growth — campaigns, attribution, app stores, data. Along the way I kept running into questions that dashboards couldn’t answer: why users choose what they choose, and how new technologies quietly change that. Research became my way of taking those questions seriously. Today I try to keep one foot in each world, so that each makes the other sharper.