Gardner (pictured) was previously chief operating officer at The Harris Poll, where he has spent almost a decade. Prior to that, he held chief operating positions at The Marketing Cloud, Subject Matter and Penn Schoen Berland. 

Reporting to Elspeth Rollert, chief executive, The Marketing Cloud, Gardner will lead Harris Quest’s market research operations.

Launched in 2023, Harris Quest offers AI-based self-service research and marketing technology products, including survey and brand management tools.

Elspeth Rollert, chief executive, The Marketing Cloud, said: “Jonathan’s deep understanding of the marketplace and research tech positions him to lead Harris Quest to its next chapter of growth. His strategic insight  will be critical as we evolve our tools through a combination of AI and human insight.”