Congrats on moving out. I'd say the need for electrical skills depends a lot on what you're doing and the state of your company. $BIGTECH with large EE team or embedded linux? Probably ok if you can read a schematic and nothing else. Microcontroller firmware at a small/medium company? Better bring it then. Hardware issues can show up in strange ways. I had some firmware hardfaults that seemed to be stack corruption, root cause was a completely screwed up analog circuit.