In the United States, auto technicians are not licensed. Anyone who goes out and purchases some tools can open up an auto repair shop or get a job at an independent shop or at the dealer. A specific shop or dealer may have a great reputation, but most drivers never know which auto technician will be working on their vehicle. You could be getting the seasoned veteran or the green auto technician fresh out of a high school Vo-tech class.
Before you hand over the keys, ask if auto technician working on your car is ASE certified in the specific repair or service your vehicle needs. That is your guarantee of getting the top of the line service for the vehicle that you and your family invested in and safety depends on.