A professional who contracts to perform specified construction work in accordance with architect's plans, blueprints, codes, and other specifications. Responsibilities include:

• Estimates costs of materials, labor, and use of equipment required to fulfill provisions of contract and prepares bids.
• Confers with clients to negotiate terms of contract.
• Subcontracts specialized craft work, such as electrical, structural steel, concrete, and plumbing.
• Purchases material for construction.
• Supervises workers directly or through subordinate supervisors.
• May be designated according to specialty license or scope of principal activities as Contractor, General Engineering; Contractor, General Building.