What was Alexander Hamilton and main job?

Alexander Hamilton was one of the Founding Fathers of the United States and served as the first Secretary of the Treasury from 1789 to 1795. His main job involved establishing the nation's financial system, which included creating a federal bank, managing public debt, and implementing a system of tariffs and taxes to stabilize the economy. Hamilton's policies laid the groundwork for America's modern financial structure and promoted a strong central government.