There can be variation. I dont think years of experience is really a good indicator. The high performers are paid a lot. I remember a story about a startup trying to hire a google engineer who was a top expert in his tech for $1M, but he turned it down because google was paying him $3M per year. Stories like this are anecdotal and not indicative of the norm. According to Levels.fyi, less than 5% of bay area engineers are making over $450k.