(1) exercise supervisory control over all functions of the executive branch of county government;

(2) direct and organize the management of the county in a manner consistent with state law, county ordinance, and the county's optional plan of county government;

(3) carry out programs and policies established by the county legislative body;

(4) faithfully ensure compliance with all applicable laws and county ordinances;

(5) exercise supervisory and coordinating control over all departments of county government;

(6) except as otherwise vested in the county legislative body by state law or by the optional plan of county government, and subject to Section 17-53-317, appoint, suspend, and remove the directors of all county departments and all appointive officers of boards and commissions;

(7) except as otherwise delegated by statute to another county officer, exercise administrative and auditing control over all funds and assets, tangible and intangible, of the county;

(8) except as otherwise delegated by statute to another county officer, supervise and direct centralized budgeting, accounting, personnel management, purchasing, and other service functions of the county;

(9) conduct planning studies and make recommendations to the county legislative body relating to financial, administrative, procedural, and operational plans, programs, and improvements in county government;

(10) maintain a continuing review of expenditures and of the effectiveness of departmental budgetary controls;

(11) develop systems and procedures, not inconsistent with statute, for planning, programming, budgeting, and accounting for all activities of the county;

(12) if the county executive is an elected county executive, exercise a power of veto over ordinances enacted by the county legislative body, including an item veto upon budget appropriations, in the manner provided by the optional plan of county government;

(13) review, negotiate, approve, and execute contracts for the county, unless otherwise provided by statute;

(14) perform all other functions and duties required of the executive by state law, county ordinance, and the optional plan of county government; and

(15) sign on behalf of the county all deeds that convey county property.