Using natural language (or diagrams) to describe how to break down and precisely solve a novel problem (scalably and securely) is not easy and never will be easy. The key skills needed for software engineering are: requirements gathering / analysis, abstraction, data modelling / ontology building, algorithms, modularity / separation of concerns, team building / communication, threat modelling / security, debugging / problem determination, operations and monitoring, and ultimately… Not Building The Wrong Thing.