The position has since evolved to become executive director of Business Western Sydney and, as of 2024, Borger continues to hold the role.

[2][3] Borger was an elected member of the Parramatta City Council, representing the Elizabeth Macarthur Ward, from 1995 to 2008.

At 30 years of age, Borger became the youngest person to hold the office of Lord Mayor of Parramatta.

[4] During his first term as Lord Mayor, he instigated a fundraising campaign to help community groups that provide services to homeless people in Parramatta.

He has worked closely with groups such as Shelter NSW, the Wesley Mission and the Exodus Foundation in securing more resources for the homeless during and beyond the 2000 Olympic Games.