Anything from verilog, PCB, firmware, compiler, kernel, to neural network.
This is what fullstack means now.
I put ML on hardware and make it go vrooooooooooom.
My setup is very boring. Helps me get real work done: Fedora, i3, neovim, halmak layout and vscode dark(best theme ever made).
Neovim is the best editor because you dont have to move your hands away from the keyboard, making you fast. wHaT aBoUt EmAcS?? Emacs is a great operating system that desperately needs a text editor.