A person or company that performs specific tasks like electrical or plumbing work in construction projects.
A person hired to do a job on a business contract, as opposed to a permanent employee.
A person or company that builds or improves buildings.
A person or company hired to maintain existing facilities like air conditioning systems, groundskeeping, etc.
One who writes computer programs; a software developer.
A device that installs or controls a software program in some other machine.
One who decides which programs will be shown on a television station, or which songs will be played on a radio station.