Building Software with AI, One Thin Slice at a Time

Goal: show how to use AI to build real software without losing your mental model of the system.

This is a live demo starting from a problem domain chosen on the spot.

I’ll go from:

• quick problem framing and story mapping
• to user stories and acceptance criteria
• to BDD scenarios and TDD
• to a working system built in thin vertical slices

Cursor is used throughout as a tool to accelerate mechanical work and refactoring.

At the end, I’ll reverse-engineer the system into use cases and basic UML diagrams directly from the code and tests, to show how documentation can be derived from the system instead of being maintained separately.