And there are of course a number of other former faculty there too, but none that I know of who've blogged as much as Matt. In the systems space, off the top of my head: Amin Vahdat, Mike Dahlin, Steve Gribble, Craig Chambers, David Patterson, David Wetherall, Eric Brewer.
Personally, I've had way more impact (and fun!) building Compute Engine and Kubernetes than I had in academia. If in doubt, try industry for a summer or a year -- nothing we write can replace personal experience.