I came across this Maidsafe job ad from nearly a couple of years ago, which provides some interesting benchmarks for thinking about professional skills in this space. Note that their specification of C++ would now be Rust. Note the importance in the ad of verifiable attainments that aren’t necessarily job-related, but could be achieved in a few years by passionate devotion to any kind of software development.
I also came across this concise Vim tutorial that motivates me (mid-year’s resolutuion) to break the habit of using a purely graphical editor. His metaphor of Vim being a language, with verbs, modifiers and nouns helps to organize what had previously struck me as a mass of rote commands.