Entercom South Florida named Katerina Perez as general sales manager of Miami’s 104.3 The Shark / WSFS-FM and The Ticket / WAXY-AM.

Gyro named Rayne Chow as president of its Singapore office.

WNET named Anthony Escobar as executive director for development and Neil Herdan as research specialist.

Jellyfish hired Paramjeet Sanghera as chief technology officer.

Turner tapped Christine Merrifield as senior vice president, ad sales strategy and monetization.

Aria Systems hired David Wittenkamp as chief financial officer and Andres Botero as chief marketing officer & senior vice president.

Cardinal Path named Andrew Edwards to lead its business intelligence unit. 

Development Counsellors International promoted Judy Lee to vice president.

Tremor Video hired Jonathan Penn as national director of automotive.

Pivot promoted Jerry Blake to executive vice president of business and legal affairs and Carla Lewis-Long to senior vice president of distribution.