And the terminology changes enormously between country and organisation.
What is called a licenced engineer in the UK (highly trained and qualified) might well be called a mechanic in the US, whilst the term mechanic in the UK implies probably unskilled where aircraft are concerned.
The other term you may have come across is "aeronautical engineer" or "aerospace engineer" which tends to imply graduates (university trained) rather than skilled (apprenticeship + college trained). There's no real standard job for an aeronautical engineer, it's more about having the skill set that can then be used for a wide variety of jobs.
The UK Engineering council would admit what in the aircraft industry we call licenced engineers as "engineering technicians" into its national register, whilst it tends to restrict the term "engineer" to graduates only - a restriction which is certainly not recognised within the aircraft industry.
G