Brian Mosteller

Brian Mosteller (born December 6, 1975) was a Special Assistant to U.S. President Barack Obama and the Director of Oval Office Operations (January 20, 2009 - January 20, 2017).

Mosteller was born in Akron, Ohio, and graduated from Revere High School. He attended DePaul University in Chicago, Illinois, and the Ohio State University in Columbus, Ohio, where he graduated summa cum laude with a degree in international business. He joined the Clinton administration in 1998. There, he traveled consistently for two and a half years advancing President Clinton and then-First Lady Hillary Clinton around the world and domestically. In 2001, he joined the Olympic Games in Salt Lake City, organizing the bobsled, luge and ski jumping competitions in Park City. His Olympic experiences continued as Operations and Logistics Manager for a private entity at the Athens 2004 and Torino 2006 Olympic Games.

Residing in Chicago, Mosteller was asked to assist with the Obama presidential campaign at its inception in February 2007. Working in Iowa, New Hampshire, and other pivotal states, he developed many of the policies and procedures used by the teams organizing the candidate's travels and events. He was involved in the on-site organization of the 2008 primary debates and executed the senator's role at the Democratic National Convention in Denver. Following Obama's election, Mosteller moved to Washington, D.C. and started in the Oval Office hours after the inaugural. Mosteller was one of the longest serving staff members in the administration. Anonymous colleagues noted that "if you [want a meeting] at two in the morning, you go through him."

Mosteller is openly gay. On August 1, 2016, at his official residence, Vice President Joe Biden officiated at the wedding of Mosteller and Joe Mahshie, another White House staff member.

Following his time in the Obama administration, Mosteller became an assistant to former Vice President Joe Biden.