For your specific case, you're already far, far ahead of the curve on my experiences with developers familiar with infrastructure concerns and spreading yoursel

For your specific case, you're already far, far ahead of the curve on my experiences with developers familiar with infrastructure concerns and spreading yourself too thin does nobody any good job or career-wise. I'm in the camp myself - I'm building my depth back and dropping whatever curiosities and novelties show up to get my head on straight. I might argue even that you've gone too far - your value as someone that can code beyond a rudimentary level is much more generalized by default than any network engineer, and context-switching between coding and infrastructure work is almost as bad as switching from coding to meetings. Computers are really fast these days and unless you're typically working with massive scale infrastructures I have trouble seeing an advantage in a developer understanding much more than how to troubleshoot things effectively so that a network engineer can determine what's wrong (being able to identify when packet fragmentation and inappropriate MTU is causing app slow-downs on top of using MTR rather than traceroute will make you a great friend to many network engineers already). Your infrastructure / SRE peers will appreciate you more for writing software that is easier to deploy and maintain when you're clueless about networking than if you understand networks and designed a system that is extremely stateful when it offers no technical advantage to be that way (databases / caches get a pass, everyone else writing software in 2018 has no excuse to keep state on a machine for longer than a business transaction window). High performing software teams deploy often and have the culture to encourage it in a healthy manner - there is no excuse to write software that is deployed weeks or months as huge chunks of changes unless you fall into very niche enterprisey domains and even still you should at least be making production-releasable software daily. And like it or not, AWS is the enterprise cloud by fiat now, so it'll determine the bar and etymology for other vendors to meet and (hopefully) exceed.