TEHRAN, Young Journalists Club (YJC) -Schiller, the Director of Oval Office Operations, announced his departure on Friday, saying, "Today is not my last day."
"It will be great to look back on in 10-15 years" he told AFP, noting that although "it's historic," government work was maybe "not for me."
Schiller said that he would return to Florida where he would rejoin the private security industry.
According to the New York Times and CNN, Schiller, a gangly former New York Police Department detective, made the decision, in part, for financial reasons.
Schiller joined the Trump Organization in the late 1990s. In 2004, he started working as the head of security at Trump Tower in Manhattan and has been Trump’s bodyguard ever since.
Trump has had a close relationship with Schiller who has been one of the only aides whom the president trusts completely outside of his family members.
His departure would be the latest in a series of White House staff changes. In August, chief strategist Steve Bannon was fired by Trump and adviser Sebastian Gorka resigned from his post.
Gorka resigned following the president’s inflammatory remarks about a violent incident in Charlottesville, Virginia, earlier this month.
On August 12, a man linked to white supremacist groups ran over a group of counter-protesters during a gathering of white nationalists in Charlottesville, killing one woman and injuring some 20 others.
Trump stirred a firestorm by refusing to blame the violence on white supremacists and saying that both sides were at fault.
His flip-flopping on Charlottesville prompted a wave of resignations on two high-profile White House advisory boards, leading Trump to officially disband both.
Every member of the White House arts committee also resigned over the issue.