Six months after leading King of Prussia-based PointRoll, the online ad sales tech developer, through its sale by Tegna (the former Gannett newspaper division) to Israel-based Sizmek for $11 million in cash and a $9 million seller loan, Mario Diez has left his job as PointRoll CEO to take the top job at Elodina, a New York-based business software firm. (Gannett paid more than $100 million for PointRoll in the late 2000s.)

Elodina says its platform of "intelligent schedulers and dynamic grid computing" makes it easier for business clients to build "big-data open-source technologies" onto their existing computer systems.

At Elodina, Diez is joining PointRoll's former chief technology officer, Keith Gelles, who cofounded Elodina -- with an early investment from Diez -- alongside partner Joe Stein, who is now the company's Chief Technology Officer. Gelles is Elodina's Chief Product Officer.