Kulturplattform Freiburg

Kulturplattform Freiburg e. V. runs events, courses and community formats in Freiburg. The platform maps what the association actually does: activities with categories, search and detail pages, course offerings, partners, the statutes, donations and a form for volunteers. The board maintains all of it themselves — including the translations, which live as resources in the database and are edited in the admin area. A new text in German and Turkish therefore needs no deployment.

The backend is a .NET 10 service in Clean Architecture with CQRS via MediatR, FluentValidation for input, JWT and BCrypt for sign-in, and Entity Framework Core on SQL Server — around 22 controllers, plus tests at domain, application and integration level. The newsletter isn’t a mailto link but a proper flow: double opt-in with a confirmation link, an unsubscribe token in every message, campaigns per language and batched sending, through Azure Communication Services with SMTP as a fallback.

It all runs on a dedicated server: Docker Compose with SQL Server, the API and nginx, dedicated mailboxes for sending, and backup and restore scripts alongside. The front-end is a React single-page app talking to the same API.