# Backend Engineering & API Development

> C#, REST, GraphQL, gRPC. On our infrastructure.

The backend is the heart of every modern application. This is where data is processed, business logic is executed, and external systems are connected. We build systems that don't just work, but are also secure and scalable.

Our advantage: We don't just develop, we also operate. On Fragon Cloud, our own products run. This expertise flows directly into your projects. No theory, but practical experience.

## Features

- C# with .NET as primary platform
- PostgreSQL, Redis, Milvus/Qdrant
- Docker and Kubernetes on Fragon Cloud
- CI/CD pipelines included
- Automated testing

## Backend Development with Us

1. **Architecture Workshop**: We analyze requirements, define interfaces, and create an architecture concept.
2. **API Design**: We document all endpoints before development. So frontend teams have something to work with early.
3. **Development & Testing**: Development with automated tests. Every pull request is tested before it's merged.
4. **Deployment on Fragon Cloud**: Automatic deployment to our Kubernetes clusters. Monitoring and alerting included.

## Benefits

- **Development + Operations = One Team**: We build AND operate the system. No finger-pointing, fast reaction times, real responsibility.
- **Enterprise Infrastructure**: Your application runs on enterprise-grade infrastructure. AMD EPYC processors, NVMe storage, redundant connectivity.
- **Data Stays in Germany**: Fragon Cloud runs on Hetzner servers. No AWS, Azure, or GCP. Full control over your data.

## FAQ

**What technologies do you use?**
Primarily C# with .NET. PostgreSQL as database, Redis for cache, Milvus or Qdrant for vector search. We rely on solid, long-lasting technologies. Other languages available on request.

**Can we host the backend ourselves?**
Basically yes, but we recommend Fragon Cloud. The reason: We can react faster, have direct access for debugging, and you have one contact for everything. And: The costs are comparable to self-hosting.

**What does support look like?**
Included in the hosting package: Monitoring and automatic alerts. For further development, we offer hourly contingents or maintenance contracts.

**Can you connect legacy systems?**
Yes, that's actually one of our strengths. We have experience with SOAP services, old databases, and proprietary interfaces. We often build modern API layers in front of old systems.