In your opinion what's the difference between the two? In my opinion both terms are frequently used interchangeably in the workplace.
But I'd like to consider myself as an engineer, because although I don't consider myself to be good at it, I think I cares about the software that I worked on, its interaction with other services, the big picture, and different kinds of small optimizations.
I mean, what is even engineering?
And the criteria for which bodies are considered professional can often come down to government or capitalism, both of which are very flawed. It should come as no surprise that software developers, who tend to be anarchists(see: the existence of FOSS), are distrustful of statist and capitalist regulatory bodies.