Any reasonably experienced engineer should pull in six figures in the Bay Area at this point, or close to it. Honestly the range should go a lot higher than it does for GOOD engineers; a good engineer who can accomplish 10x over an "average" $80k engineer should be able to make more than $120k or so. But I'm not bitter... [1] ;)
[1] Actually, I'm not. I took my ~$120k salary to another state and worked from remote for 3 years, getting the lower cost of living combined with the San Francisco salary, and giving myself an "effective" raise of about 80% (it wasn't Atlanta-cheap or it would have been even better). I kept everything well documented, but they still knew they couldn't easily replace me. YMMV.
[1] Actually, I'm not. I took my ~$120k salary to another state and worked from remote for 3 years, getting the lower cost of living combined with the San Francisco salary, and giving myself an "effective" raise of about 80% (it wasn't Atlanta-cheap or it would have been even better). I kept everything well documented, but they still knew they couldn't easily replace me. YMMV.