Collier was an Infantry Officer in the United States Marine Corps.

Collier completed two tours of duty overseas, with one of them being a combat tour in Afghanistan.

Upon completion of his time in Afghanistan, he was selected to work in the White House as a Marine representative during the George W. Bush administration.

Collier is a graduate of Villanova University.

Collier is a co-founder of Frontline Holdings, an investor and operator of value-add multifamily apartment communities. Frontline owns and manages approximately 8,000 apartment units with a focus on high growth markets.

Prior to Frontline, Collier has served as a financial advisor with both Merrill Lynch and Morgan Stanley where he advised high net worth individuals and families on investment strategies and portfolio management.