EASA AML (Aircraft Maintenance Licence)
A - Mechanic
B1/B2 - Technician Mechanical/Avionic
c - Engineer
These are the three levels that can be held by a AML holder. Each level requires exams to be passed or in the case of the C cat several years experience. BA uses differing terminology which in my opinion is incorrect as an RMA technician IS really a mechanic and definitely not an engineer by the true definition.
I drove behind a van today with 'refrigeration engineer' stencilled upon it,which university did they study engineering at do you think!