Donald Trump has tapped longtime supporter Omarosa Manigault as director of communications in the public liaison's office. (Victoria Walker/The Washington Post)

President-elect Donald Trump filled out more of his senior White House staff on Wednesday, formally naming three deputies to assist Chief of Staff Reince Priebus, including two who have worked on the transition.

He also announced a rash of additional hires, including rewarding the longtime head of his personal security operation, Keith Schiller, with a job overseeing Oval Office operations. Omarosa Manigault, a former reality television personality who worked on Trump’s campaign and transition, and Bill Stepien, a former aide to New Jersey Gov. Chris Christie (R) who was let go in the wake of the Bridgegate scandal, also will be joining the White House staff.

The Trump transition announced that Katie Walsh, a former Priebus deputy at the Republican National Committee, will help oversee senior staff and manage the scheduling operation and Office of Public Liaison; Rick Dearborn, former chief of staff to Sen. Jeff Sessions (R-Ala.), will lead the White House legislative affairs office; and Joseph Hagin, who served as White House deputy chief of staff for operations under President George W. Bush, will assume a similar role in the Trump administration.

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Those moves were expected. Dearborn and Walsh helped lead the transition efforts. Hagin is a founding partner of Command Consulting Group, a Washington-based security and risk management firm.

In a statement, Priebus said the trio would “fill critical roles as we push forward on all of the key priorities.”

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Hagin has worked closely with the Secret Service and is expected to help coordinate security operations in the Trump White House. That effort could be complicated by the presence of Schiller, who has gained Trump’s trust over the 17 years he has served as the New York business executive’s personal bodyguard. Schiller, a former New York police detective, was a consistent presence on the campaign, including punching a protester outside Trump Tower last year and escorting out a television journalist from a news conference.

Manigault, who gained attention in 2004 as a contestant on Trump’s NBC reality show, “The Apprentice,” will serve as director of communications in the public liaison’s office.

Stepien, who managed Christie’s gubernatorial campaigns and served as his chief of staff, lost Christie’s trust during the scandal over the politically motivated lane closures at the George Washington Bridge. Although Christie severed ties with him, Stepien joined the Trump campaign this year. He will serve as the White House political director.

Additional hires are Marc Short, director of legislative affairs; John DeStefano, director of presidential personnel; Josh Pitcock, chief of staff to the vice president; George Gigicos, director of advance; Jessica Ditto, deputy communications director; Raj Shah, deputy communications director and research director; Jen Pavlik, deputy chief of staff to the vice president; and John McEntee, personal aide to the president.