AppNexus Announces Senior Hires In Advertiser Technology Group (ATG)

- Appointments made as company hits milestone of 1000 global employees- Former Google executive Doina Harris joins as VP of ATG, EMEA; former SAP executive Michele Weber to lead ATG Global Marketing-

Press Release

NEW YORK, - AppNexus, the world's leading independent ad tech company, today announced the appointment of longtime Google executive Doina Harris as Vice President of the Advertiser Technology Group (ATG) in EMEA and SAP veteran Michele Weber as Vice President and head of ATG global marketing. Harris and Weber will report directly to Casey Birtwell, General Manager of ATG and a member of the company's Operating Committee.  The appointments of Harris and Weber fill out the leadership ranks of ATG, the AppNexus business unit dedicated to producing market-leading technology for advertisers, agencies, and ad tech companies that serve buy-side market participants.  Today's announcement also comes on the heels of an important milestone, as the company's global workforce surpassed 1000 employees across 23 offices and five continents.

"This is a tremendously exciting time for AppNexus," said Michael Rubenstein, the company's president.  "In the space of just fifteen months, we've doubled our professional workforce, expanded to 23 offices across five continents, and welcomed OAS, Alenty, MediaGlu, Yieldex and Real Media Latin America to our family. By every measure – whether by revenue, breadth of product offering, or workforce – AppNexus continues to grow and push the boundaries of what's possible in digital advertising.  Buyers and sellers of advertising need a scaled, independent leader to help them grow their businesses.  AppNexus has unquestionably stepped into that role."      

Under the company's internal organization, ATG is tasked with building out a full-stack offering for advertisers while the Publisher Technology Group (PTG) is tasked with completing AppNexus' full-stack solution for content producers.

"We are thrilled to welcome Doina and Michele to AppNexus," said Birtwell.  "They bring gravitas and experience that will power our development as the independent enterprise platform of choice for ad tech companies."

Harris has held senior-level roles at Google since 2007, including Director of Sales Operations and Strategy for Southern and Eastern Europe, Middle East and Africa. Weber was previously VP, Growth Marketing & Communications at SAP; she brings a wealth of experience in enterprise technology marketing.

This summer, the Advertiser Technology Group unveiled two major products – AppNexus Programmable Bidder, an innovative technology that enables advertisers and agencies to upload their proprietary algorithms directly to the AppNexus open platform and test and refine algorithmic strategies to optimize campaign outcomes; and a video buying product that aims to provide programmatic video buying at a fraction of the prevailing market rate, in a way that preserves and improves yield for sellers of video inventory.

"Expect to hear much more this fall about both of these products," continued Birtwell.


AppNexus is a technology company that provides trading solutions and powers marketplaces for Internet advertising. Its open, unified, and powerful programmatic platform empowers customers to more effectively buy and sell media, allowing them to innovate, differentiate, and transform their businesses. As the world's leading independent ad tech company, AppNexus is led by the pioneers of the web's original ad exchanges. Headquartered in New York City with 23 global offices, AppNexus employs more than 1000 of the brightest minds in advertising and technology who believe that advertising powers the Internet. For more information, follow us at @AppNexus or visit us at