As someone without CS background working in a modest app, I think a lot of it will come down to architecture, supervision and direction rather than grunt code writing.

You need to know about database normalization, about algorithms and techniques, ideate solution to problems etc because as impressive as those 1-shot youtube videos on model release look, once you go beyond that, that's where the value ad comes in my experience.

I didn't mean the job itself. I know what that's like.

I'm talking about learning/training for the job!