So, My father who has a degree in mechanical engineering, worked for TRW on steering systems, and had the title Senior Engineer was not an engineer, because he did not have a license? He was not required to have a license by his employer or the state. Before he worked on steering systems, he worked on presses for aluminum extrusion (read as involving extremely high pressures).
Both of these positions required him to design systems that if they failed would be vary dangerous and likely seriously injure or kill people. Yet you claim he was not an engineer.
I wonder if you would consider Gustave Eiffel, Henry Ford, Leonardo da Vinci, or James Watt engineers.
Some engineers are licensed in some jurisdictions because it is required by the law or by the employer. However, a license does not make the engineer.