As part of set of top-level executive moves, OTT and video streaming measurement and analytics company Conviva has hired software industry vet Bill Demas as CEO.

Additionally, former Nielsen exec John Zelenka has joined as SVP of global sales, and company co-founder, Hui Zhang, has been appointed chief scientist and chairman of the board.

RELATED: Global OTT Video Viewing Doubles: Conviva

Demas most recently was CEO at Shopkick, a service that enabled consumers to earn free gift cards, and was CEO of Turn, the company behind a real-time digital advertising hub for audience planning. He is also late of Overture/Yahoo.

“Conviva is in a unique position as the only source of truth for digital TV and video,” Demas said in a statement. “The company is setting the measurement standard as streaming publishers and distributors continue to disrupt the industry. With a sensor footprint exceeding three billion applications and devices, and processing a trillion events per day, Conviva is helping streaming TV leaders like HBO, Sky, Turner, NBC, and Hulu deliver the best digital experience on any device today.”