the term normally refers to a developer that can be productive in every layer required for a typical application to work.

They can do the front end design/styling/implementation and are familiar with front end languages and frameworks

They can do the backend API design and are familiar with the typical backend languages and patterns.

They can do the database table design, write and optimize queries.

They can handle the ci/cd scripting that handles building and deploying the application

They can design and write the automation tests and are familiar with the libraries used for that.

And a bunch of other crap like load testing or familiarity with cloud services.

The latest thing added to the list is AI model creation which is a nightmare… but, I can’t say no 🤷‍♂️

doesn’t work well with non-native english speakers though

I’m really lazy and use regolith, is that bad?