Interesting. I searched for some more information on that but don't see anything except the GitHub repostoryitself. I wonder how would one go about integrating that into .Net stack.
Check out Bazel's remote execution feature and Google RBE (remote build execution) [1]. Bazel itself is language agnostic (language support comes in the form of rules).
There's also an opensource goma client + server which proxies to RBE (or potentially other bazel remote execution API implementations). Which is great if you can't or don't want to use the bazel client, but can use a compiler wrapper.
