While the position hasn't been officially announced, sources close to the Trump transition told the Post that Scaramucci will take over the Office of Public Engagement and Intergovernmental Affairs, a powerful role currently held by Obama ally Valerie Jarrett.

That would put the former investor at the nexus of agenda-setting inside the Trump White House. The Post reported that Scaramucci will help foster White House relationships with the financial and technology sector.

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Scaramucci has appeared regularly at Trump's Manhattan high-rise, which has become home to top members of the transition team. And he's a regular Trump surrogate on cable news.

Scaramucci runs his own hedge fund, Skybridge Capital, and previously served as national finance co-chair for 2012 GOP presidential nominee Mitt Romney's campaign. He was on the finance teams for 2016 GOP candidates Scott Walker and Jeb Bush.

He started his career at Goldman Sachs and is the sixth person with Goldman roots to join the White House.

Trump also announced that Dina Habib Powell, Goldman's Global Head of Impact Investing, would join the White House as Assistant to the President and Senior Counselor for Economic Initiatives.