What we did
We built D-Bell Oy a modern digital QR-based doorbell system aimed at households as a replacement for traditional doorbells. The system enables easy, secure communication between visitors and residents through mobile devices.
The solution is built on a Go backend and a PostgreSQL database, self-hosted in the customer’s own environment. The interfaces are implemented in Flutter, and the app runs on iOS, Android, and the web.
CI/CD is built on GitHub Actions, enabling smooth releases and automated testing across environments.