BudgetBuilders

Customers post orders, builders bid on them, and the platform manages the lifecycle between the two. The backend is a properly structured Express service: versioned migrations, request validation middleware, rate limiting, refresh-token auth and email OTP, with a Flutter client on top and CI on every push.

• Order, sub-order, bid and interested-builder models with a migration runner rather than ad-hoc schema drift.
• Layered middleware: auth, validation, rate limiting and centralised error handling, with structured logging and env validation at boot.
• Dockerised backend with a GitHub Actions pipeline.