In a macro sense, though, you’re going to have to come to grips with the fact the work environment has changed. I’ll bet the fact that you don’t want an open office knocks out 60-70% of Seattle-area prospects right off the bat. Quiet colleagues? Tech bros are where it’s at...bro! You’ll have at least one in 50% of the remaining prospects. Managers are not getting any more competent, so whack off another 25%. The quiet, professional workplace with offices is largely gone, so prospects that fit your parameters are less common than in the past.
That all said, my brief flirtinsg with embedded and the reports from others indicate that it is a field with higher instances of what you’re looking for.