Seconded. Engineering salaries have jumped significantly recently. With 2 years experience out of college I've seen people getting offers of 120k - 140k.
Are you in SF? I'm in Houston, and 100K is closer to the norm for engineers here, but of course, 100K wouldn't go as far in SF. Were I to take a job in SF, I'd probably need a $20K-30K premium.
I'm in my first midlevel engineering position and including my year end bonus I make about 125k and this was the salary they offered me. My asking price was below what they offered.
For the long-term career-conscious and money-hungry, it almost makes you want to plan a trajectory that doesn't plateau at "senior engineer". That seems like a shame/misuse of resources, doesn't it?