Site Reliability Engineer.
An excellent description of Site Reliability Engineering can be found at [http://www.site-reliability-engineering.info/2014/04/what-is-site-reliability-engineering.html](http://www.site-reliability-engineering.info/2014/04/what-is-site-reliability-engineering.html) [SiteReliabilityEngineering.pdf](/assets/SiteReliabilityEngineering.pdf), [SRE.pdf](/assets/SRE.pdf) and in [Ben Treyor's interview here](https://landing.google.com/sre/interview/ben-treynor.html).