I'm a long time software developer (30+ years) who has worked with very nearly every procedural programming under the sun (I've not done anything with functional programming, but I'm working to remedy that). I started on the TRS-80 Model and have worked on everything from DEC-10s to 8051s and pretty much everything in between. I've done machine control, instrumentation, web backends and frontends, security and probably other things that I can't remember at the moment.