Not the original author, but I would guess that understanding the domain problem and interpreting it correctly in a software solution (not code, but a product with workflows, UX, etc.), which in turn requires ability to listen and understand and ask right questions on one hand (what a user wants to achieve), and a good understanding of the technical limitations as well as human habits on the other hand (what is possible and makes sense). One can argue that AI lacks what we'd call intuition and interpersonal qualities which are still necessary, as before AI.