Mr. Topolsky, who was the editor in chief of the technology site Engadget until 2011, helped to found The Verge, and was one of the creators of its parent company, Vox Media. He will develop and run Bloomberg’s new ventures, which will cover specific topic areas like politics and luxury.

Image With Bloomberg’s resources, Joshua Topolsky said, the job is “an opportunity to build a 21st-century media company.” Credit... Slaven Vlasic/Getty Images

“The potential is massive,” Mr. Topolsky said of his decision to take the job. “They have the resources and the technology. It’s an opportunity to build a 21st-century media company to scale.”

Mr. Topolsky will be replaced at The Verge by Nilay Patel, its former managing editor, now the acting managing editor of Vox.com. Dieter Bohn will become executive editor of the technology site.

In joining Bloomberg, which had been viewed as a lucrative but not necessarily cutting-edge destination for reporters and editors, Mr. Topolsky is bucking the trend of young, web-native journalists leaving established media brands for smaller, more nimble start-ups. Those include Ezra Klein, formerly of The Washington Post, who moved to Vox Media.

“They’re very different companies,” Mr. Topolsky said, “with very different challenges and goals.” He added, “Right now all I see is this huge potential and huge resources to build unbelievably strong brands.”