Coremetrics hired JAY A. HOLMSTROM as vice president for worldwide consulting services.

JASON STEINBERG was hired as a director at Spark. He joins the agency from Carat Australia, where he was a digital director on several major accounts.

GRANT WHITMORE joined Jumpstart Automotive Media as general manager, publisher & business development.

Imagine 360 named NICO MCLANE as CTO and director of interactive media. Most recently, she served as department head of the Broadcast & Streaming Media Development Group at JPMorgan Chase.

Hitachi Global Storage Technologies named RAJ DAS to senior vice president of worldwide marketing. Most recently, Das was vice president at SGI, where he was responsible for product management, product and channel marketing, and outbound activities for the company's storage product division.

GERRY MARRONE joined ICC/Decision Services, as senior vice president of brand & agency development.

Allen & Gerritsen named DAN LYONS director of human resources.

MICHAEL GALLIC was promoted to marketing director, PopSciMedia Group and BRIAN GLASER was named digital sales development manager for PopSci.com.

Travel Ad Network promoted BRIAN SILVER to president.

STEVE PEARSON was named senior vice president of engineering at Tremor Media. He joins the company from CBS Interactive, where he served as vice president of advanced technologies.