Yes, while I worked at a bigger company, our team of 15 developers and 5 SRE managed to build a few self hosted Kubernetes clusters for our microservices, a pipeline and also set up cloud development for fail over. We used Data Dog, Consul, Elastic Stack and a few SQL and NoSQL dbs.

I mostly self learned and was helped a bit by guys who started before me. The rest self learned, mostly by doing, solving issues, reading articles and tutorials.