Abhishek Sen

Abhishek Sen is the CEO and Co-Founder of NumberEight, a London-based AI company that uses on-device machine learning to infer contextual signals — such as user activity and environment — from smartphone sensors, enabling privacy-preserving audience targeting without cookies or device identifiers. NumberEight positions itself as a solution for the post-IDFA, cookieless advertising ecosystem, helping publishers and advertisers reach relevant audiences while respecting user privacy. Sen co-founded NumberEight with a focus on building contextual intelligence infrastructure for the mobile advertising industry. The company has attracted attention in AdTech circles for its approach to identity-free targeting at a time when signal loss from privacy regulations and platform changes has become a central challenge for the industry. Prior to NumberEight, Sen has a background in machine learning and data science, which underpins the technical foundation of the company's on-device inference engine.

Last updated Oct 22, 2026 by ATDb automated enrichment