Your opinion is not the established nomenclature. Senior is widely understood to be 4 yr degree + 5 yrs experience. This means you have all the technical training plus enough professional experience to be considered fluent.

At ten years you should be absolutely expert in the areas you've worked in. This is staff or senior staff level, if you also have some business acumen, ie the ability to see beyond engineering requirements.

I don't really care what the established nomenclature is. I was stating what I consider senior and 5 years of industry experience doesn't cut it for me.

What's your experience cutoff for someone without a CS (or equivalent) undergrad degree? Or someone who has an unrelated undergraduate degree and spent 2 years getting a CS MS?