Design straight in code, with AI

A regulated iGaming platform: the player platform and the operators' backoffice.

Design happened in Figma, outside the product repository. A feature went through design, product and dev, and one of them was estimated at 3+ weeks.

Designers started building directly in the product repository, with Claude Code and Cursor and support from the developers, taking the work all the way to production.

API contracts defined with the back end. Pull requests on GitHub, reviewed by the front-end tech lead.

I led the design process and the design team's rules. I created Cursor and Claude Code rules and skills, a review agent that runs before the pull request, documentation automations and a checkpoint skill that shares the task context across the designers' agents.

The front-end tech lead set up the quality gates, the CI, the repository rules and the mock safeguards.

One feature estimated at 3+ weeks (design, product and dev) was delivered in 2 days of work.

Two prototypes also came out of it, not in production: Cato, an assistant that answers based on the platform's context, and a guided onboarding where the AI performs the task on screen alongside the user.

AI writes, machines verify, people decide. And the gain was not immediate: at first, a lot still took a long time.