First elected to public office in 1999. Joseph was the then youngest Mayor in New South Wales.
His more than two decades of service at senior levels of the Liberal Party include serving on the NSW State Executive and successfully managing targeted seats campaigns at State and Federal elections.
Joseph has managed several successful campaigns resulting in the election of candidates to parliament.
Through his long and successful contributions to the political processes across all levels of government, Joseph has developed proactive working relationships with leaders at all levels of the political spectrum.
This combination of experience, personal rapport, and an instinct for what could and should be done to improve public policy has made Joseph a highly regarded advocate and a trusted political advisor.
In 2011, Joseph founded Cornerstone Group a national bipartisan firm. For more than a decade, he has worked with and advised a range of major private sector corporations.
Today, Cornerstone is one of the leading national firms delivering client focused outcomes across the political spectrum.
Joseph brings insight to the complex nature of government and has developed trusted working relationships with leaders in government. He knows how to unpack the complexities of Government leading to successful outcomes through his experience in advocacy, strong partnership and public policy making.