(Undated)  --  STEM workers are in fierce demand.  A new WalletHub analysis says the Seattle-Tacoma-Bellevue area ranks at or near the top of the nation's 100 largest urban areas for those who work in science, technology, engineering, and math.  Seattle is 5th for highest quality of engineering universities, and 2nd for the percentage of its workforce in STEM.  It ranks first in the category of Professional Opportunities and 6th for "STEM-friendly Environment."  The Portland metro area ranked 44th overall.