There are usually three main levels people talk about, entry, mid career, and sr. If you say SDE, I'd assume a mid-career person, which is 100% earning way more then 150k in Seattle. https://www.levels.fyi/t/software-engineer/locations/greater... has more data.

In Big Tech(tm) you’d have at least lead/staff and principal on top of those levels, who make even more.