QuoteBoy, the pickings out here are pretty slim, and you have observed things pretty accurately with your conclusion that there are just a "few" satellite offices of large sell-side investment banks . . . Bear, Merrill, Goldman, CSFB, Deutsche Bank, Mellon Capital, Susquehanna, and SG Cowan all have some rather "basic" presence here, along with some niche players like First Albany and Pacific Growth Equities. B of A Securities is basically gone.
Of course, there is the world's largest index fund, Barclays, and there are also a few other fairly large mutual funds like Dresdner/RCM, Dodge & Cox, The Fremont Group, Fisher Investments, Franklin Templeton, Bailard, Biehl & Kaiser, RS Investments, Insight Capital Research & Management, and Seneca Capital to name a few - - - with a smattering of small hedge-funds all over the place ( but as you well know, it doesn't take a lot of people to run/manage a couple hundred million ).
By and large San Francisco is not a big hub of financial market activity. The PSE, for all intent and purpose is on "life-support".
Most funds and securities firms that have employment openings, especially in the trade clearing/back office/fund accounting area will advertise online at the Security Analysts of San Francisco website:
http://www.sasf.org/cfmfiles/home/indlnk.asp
Hope this helps!