Mind if I ask where you are located and what you are doing? I know job titles are meaningless but where does it only take 4 years experience to be a senior engineer and earn 115K? I have 10 years and I'm still a few years away from being considered a senior engineer. I'm not in California, but DC area doesn't exactly have the lowest cost of living either and I don't make 115K.
I agree. Senior after 4 years sounds like either (1) title inflation, or (2) this person is exceptionally smart.