In my jurisdiction, minor electrical work can be done by the homeowner (as long as it's a single family home). I think technically even major electrical word can be done by the homeowner as long as it's inspected and signed off, though it's possible that the inspector will require electrician signoff first.

But if a guy who is a master electrician in El Salvador can sell himself as an electrician here, then a homeowner may trust him to do major electrical work "Permits? Naa, you don't need permits for this, that'll just make it more expensive. Trust me! I'm an Electrican and I've been doing this work for 20 years back home"