Diarmuid Gill
Diarmuid Gill is Chief Technology Officer at Criteo, one of the world’s leading commerce media platforms, where he has led research and engineering since joining in 2014. He has been instrumental in repositioning Criteo from its origins as a retargeting specialist into a comprehensive commerce media platform, helping retailers and brands build advertising businesses grounded in first-party data and privacy-compliant identity solutions. His work spans the deprecation of third-party cookies, the buildout of Criteo’s retail media network technology, and closed-loop commerce measurement.
Last updated Jun 6, 2026 by the ATDb Editorial Team
- Years in industry
- 15 years
Bio
Diarmuid Gill is Chief Technology Officer at Criteo, one of the world’s leading commerce media platforms, where he has led research and engineering since joining in 2014. He has been instrumental in repositioning Criteo from its origins as a retargeting specialist into a comprehensive commerce media platform, helping retailers and brands build advertising businesses grounded in first-party data and privacy-compliant identity solutions. His work spans the deprecation of third-party cookies, the buildout of Criteo’s retail media network technology, and closed-loop commerce measurement.
Expertise & education
Expertise
Speaking topics
Recognition
Notable achievements
- Led key business units during Criteo's transformation from a retargeting company to a full-stack commerce media platform
- Instrumental in scaling Criteo's retail media network product suite, enabling retailers to monetize first-party data at scale
- Drove strategic initiatives around cookieless advertising solutions in response to third-party cookie deprecation