Chief Financial Officer - CFO

This is the senior manager who is responsible for overseeing the financial activities of an entire company. This includes signing checks, monitoring cash flow, and financial planning.

Investopedia Says:
The CFO is similar to a treasurer or controller.

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Executive officer who is responsible for handling funds, signing checks, keeping financial records, and financial planning for a corporation. He or she typically has the title of vice president-finance or financial vice president in large corporations, that of treasurer or controller (also spelled comptroller) in smaller companies. Since many state laws require that a corporation have a treasurer, that title is often combined with one or more of the other financial titles.

The controllership function requires an experienced accountant to direct internal accounting programs, including cost accounting, systems and procedures, data processing, acquisitions analysis, and financial planning. The controller may also have internal audit responsibilities.

The treasury function is concerned with the receipt, custody, investment, and disbursement of corporate funds and for borrowings and the maintenance of a market for the company's securities.