I'm not sure what we would gain from an overall software engineering professional qualification. While I am quick to point to avionics development as (in my opinion) being true software engineering, I also acknowledge that a great deal of software is not built using any methods even remotely as rigorous. But then, it also probably doesn't need to be.

You put a lot more rigor into building a house for people than you do a house for dogs, and you put a lot more rigor into building a skyscraper office building than you do a house. And rightly so. Each needs to withstand different levels of pressure. I see no reason to apply rigorous engineering processes to iPhone games; it would be a waste of time and resources.

As it is, the industries that require rigorous software development have produced their own standards. I suppose if you could ascertain the similarities across industries and codify that into general software engineering practices, that could be a good thing, but you'd probably still need industry-specific regulations to make sure nothing was missed.

I dunno. Maybe if more software needed extensive rigor it would be more obvious what needs to be done across industries.