Donald Trump added three more senior staffers to his presidential campaign on Tuesday, further advancing his move toward a more traditional campaign operation in the general election.

Former Republican National Committee staffer Michael Abboud has been hired as Trump's new communications coordinator. He will lead the rapid response and daily messaging team to ensure the campaign releases timely responses to attacks leveled by Hillary Clinton's team.

Ex-Ted Cruz communications adviser Jason Miller has taken on the same position in the Trump campaign. Miller will work closely with campaign spokeswoman Hope Hicks to build out the communications operation even further ahead of the November election. The pair will also work on Trump's messaging and the coordinate with campaign surrogates.

Alan Cobb, who previously served as a senior adviser to the candidate, will now be Trump's director of coalitions. Cobb, whose resume includes positions with former U.S. Sens. Bob Dole and Sheila Frahm, will be a liaison between Trump and coalition groups like his recently-announced evangelical executive advisory board.

"As we continue to work to defeat Hillary Clinton this November, I am constantly building a superior political team," Trump said in a statement released by his campaign. "After winning the most votes in the history of a Republican primary contest, we are taking our messages to the people so that we can Make American [sic] Great Again."

Trump has rapidly expanded his campaign operation over the last week, following the dismissal of campaign manager Corey Lewandowski. In addition to expanding his team, the presumptive GOP presidential nominee has begun soliciting small-dollar contributions from his grassroots supporters and toned down his bombastic rhetoric.

The Manhattan real estate mogul is slated to deliver remarks about trade and the U.S. economy at 2:30 p.m. ET on Tuesday in Monessen, Pa.