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Messinger had been working with Twitter for five years and became the CTO in March 2013. Prior to joining Twitter in 2011, he was vice president of development at Oracle Corp.
Engineering Vice President Ed Ho will now take over all product and engineering and report directly to Chief Executive Jack Dorsey, Recode reported, citing people familiar with the restructuring.
"We're taking steps to streamline and flatten the organization by elevating our engineering, product and design functions, with each area now reporting directly to Jack," a company spokesperson said in an email.
As chief technology officer, Messinger was responsible for engineering, product development, and design at the microblogging company, amid efforts to find new products and features to grow its user numbers.
San Francisco-based Twitter has faced a string of departures, including in its product team, which has had three heads in less than a year.
No one individual was essential, but the fact that they all left should be concerning, especially since Dorsey is splitting his time between Square Inc and Twitter, Wedbush Securities Inc analyst Michael Pachter said.
Twitter's Chief Operating Officer Adam Bain left the company last month, handing over the reins to Chief Financial Officer Anthony Noto.
Josh McFarland, vice president of product at Twitter, also said on Tuesday that he would leave the company to join Silicon Valley venture firm Greylock Partners.
Twitter said in October it would lay off 9 percent of its employees and shut down video app Vine to keep its costs down.
(Reuters)
