Doubleday has announced several editorial promotions, in addition to a new executive hire.

Kristine Puopolo, formerly execute editor, has been promoted to v-p, editorial director of nonfiction, and Thomas Gebremedhin, formerly a senior editor at the Atlantic, is joining Doubleday as v-p, editorial director, nonfiction. Both appointments are effective immediately, and both executives will report directly to Bill Thomas, executive v-p, publisher and editor-in-chief of Doubleday. The news comes the same day that the company announced that Gerry Howard will retire as v-p, executive editor of Doubleday at the end of the year.

Thomas praised Puopolo’s long history of editing “multiple Pulitzer and National Book Award Winners,” and cited her work in shaping the overall Doubleday list. Thomas also cited Gebremedhin’s “polymathic breadth and depth of interest” and said he will be charged with developing books of “cultural, sociological, intellectual, literary, technological or personal significance,” as well as pop cultural phenomena and marginalized voices.

In addition, Margo Shickmanter, previously editor, has been promoted to senior editor, and Carolyn Williams, previously assistant editor, has been promoted to associate editor. Williams will report to Puopolo.