I'm not sure how relevant it is as an appeal to authority measure, but in the US...

ghaff on Aug 27, 2017 | parent | context | favorite | on: DIY Powerwall Builders Are Using Recycled Laptop B...

I'm not sure how relevant it is as an appeal to authority measure, but in the US there is a Professional Engineer license. It's mostly relevant when you have to sign off on designs for regulatory bodies.