Site Reliability Engineering. It is the role that, among other things, ensures that a service uptime is optimal. It's the closest thing we have nowadays to the system admin role
Every industry has been undergoing digital transformation for decades. There are SREs ensuring service levels for everything, from your electrical meter, to satellite navigation systems. Someone wrote the code that boots your phone and starts your car. Somebody's wireless code is passing through your body as you read this, while an SRE ensures the packet loss isn't too high.