Ask HN: How Much Do SREs (Site Reliability Engineers) Make in the Bay Area?

I want to get an idea of the average compensation (salary + bonus) that SREs are making in the Bay Area. Do you have junior/mid/senior level experience? Are you working for a startup or a large established company?

Google employs a lot of SREs - they have a 20% SRE-to-Engineer ratio. SREs are also found in many other companies.