Backend Development
Server-side systems with .NET and ASP.NET Core – including background services and clean data access. Built for operations, not just release day.
.NET Developer · Software Architect
Chris Röder
I design and build maintainable software systems with .NET – from architecture and APIs to mobile applications.
Backend · APIs · Mobile · Architecture
01 — About
Software development beyond individual features.
For more than 10 years I have been building software with .NET – as a developer and software architect. My focus is on backend systems, APIs and mobile applications.
I think in complete systems: from concept through architecture and implementation to deployment and operations. Automation, performance, security and maintainability are an integral part of every technical decision.
I maintain my own software long-term – for example the learning app PLU Tester, which I have been continuously developing for around 10 years.
- 10+
- Years Experience
- Brühl
- Brühl, Germany
- End-to-End
- Software Development
02 — Expertise
Four focus areas, one standard: maintainable systems.
API Design
REST APIs with clear contracts that integrate well and stay maintainable long-term.
Software Architecture
System design with clear separation of concerns – scalable and maintainable, even as requirements change.
Mobile Development
Native mobile apps with .NET MAUI for iOS and Android – including device integration.
03 — Technology
Tools I use in production.
Grouped by area of use – the stack I work with.
Backend
- C#
- .NET
- ASP.NET Core
- REST APIs
- EF Core
Architecture
- Software Architecture
- API Design
- Background Services
Mobile & UI
- .NET MAUI
- Blazor
- Razor
Data
- SQL Server
- SQLite
DevOps & Infrastructure
- Docker
- Linux
- IIS
- Nginx
- Traefik
- GitHub Actions
- CI/CD
Testing & Operations
- NUnit
- Appium
- NLog
- Sentry
- Quartz
Security & Configuration
- Infisical
04 — Featured Project
PLU Tester
Learning app for retail employees
Actively developed for ~10 years
PLU Tester is a learning app for retail employees: new cashiers need to learn PLU numbers for products. The app helps memorize these numbers faster, reduces onboarding time and gets employees productive sooner.
I started my journey into software development with this project around 10 years ago – and still actively develop it today: from Xamarin to .NET MAUI. An example of long-term product thinking.
I built the entire solution: mobile app for Android and iOS with .NET MAUI (SQLite, device-specific features, notifications, messaging, leaderboard), plus a REST API and a Blazor website – deployed with Docker on Linux.
Technical overview
- .NET MAUI
- Android + iOS
- SQLite
- REST API
- Blazor
- Docker · Linux
Download options for the app are also available at plutester.de.
05 — How I Work
Principles, not buzzwords.
Automation
Recurring processes are automated when automation permanently reduces complexity and errors.
End-to-End Systems
Not just individual features, but systems from architecture and backend to deployment and operations.
Performance
Performance as part of technical decisions, not as an afterthought.
Security
Security considered at architecture and implementation stage.
06 — Contact
Let's talk.
For professional exchange, project ideas, or general inquiries, feel free to get in touch.