.NET Development Specialist
.NET Development Freelancer for C#, VB.NET, WPF & WinForms
Custom software development with .NET for over 15 years. Solid architecture, clean code, on-time delivery.
Custom software development with .NET for over 15 years. Solid architecture, clean code, on-time delivery.
Looking for professional .NET development? As a freelance developer with over 15 years of experience in C#, VB.NET, WPF, and WinForms, I bring your software project to life. Whether it's a new build, extending an existing system, or migration: here's how I work, what sets me apart, and how we can get started.
Let a specialist handle your project.
WinForms, WPF, C#, VB.NET, MVVM, SOLID. No guesswork, no surprises. Drop me a message and I'll get back to you quickly.
Get in touch →From a single feature to a complete project. I build software that works in the real world.
C#, VB.NET, WPF, WinForms. New applications or modernization of existing software. MVVM, Clean Code, SOLID.
Clean up legacy code, improve performance, introduce architecture. Without rewriting everything from scratch.
Reusable .NET libraries, interfaces, and NuGet packages. Properly documented and tested.
Joining existing development teams as an external .NET specialist. Remote, self-directed, flexible.
I have been working professionally in .NET development since 2011. From small tools to complex enterprise solutions. I always structure my code around established design patterns, because clean code is non-negotiable.
I have proven my expertise across a variety of software projects:
Permanent positions in companies of all sizes and years of freelance work for client projects have shaped my approach.
Efficient and transparent communication with clients is my top priority.
More than 15 years of hands-on .NET development experience.
When it comes to delivery speed, I always have an ace up my sleeve.
Microsoft's Windows Forms toolkit (WinForms) was one of the first frameworks to make building graphical user interfaces simple and intuitive. My own roots in .NET development began with Windows Forms. Years of experience have shaped it into one of my core competencies.
WinForms is particularly suited for applications that need to be delivered quickly: data entry forms, internal tools, management software. The technology is mature, stable, and continues to be supported by Microsoft. Existing WinForms applications can be extended, modernized, or gradually migrated to WPF.
Combined with the MVVM design pattern (the clean separation of data, views, and logic), Windows Presentation Foundation (WPF) is where modern Windows development lives. WPF is the framework I primarily use today, and it opens up entirely new possibilities for building rich user interfaces.
WPF separates design (XAML) cleanly from code. This means better maintainability, easier testing, and the ability to create visually compelling applications. For new .NET software development, WPF is the recommended choice.
Anyone working with .NET development will inevitably encounter the two main .NET programming languages: C# (C-Sharp) and VB.NET (Visual Basic .NET). While C# clearly dominates in today's landscape, VB.NET is by no means inferior. Both languages access the same tools: the .NET Framework.
In practice, I also prefer C#. This is due to its large developer community and the familiar C-style syntax. However, I am equally the right person for legacy systems built in VB.NET.
A team that speaks the same language will naturally collaborate more easily. As a client, you benefit from this: instead of hiring different developers for different areas, you can work with a single .NET developer at a consistent hourly rate.
In the .NET ecosystem, the division of work is relatively straightforward compared to other domains. In WinForms, most tasks are handled by a single developer. In modern WPF applications, the clean separation of design and code is an essential practice.
Let's talk about your project.
No strings attached, no detours. Describe your project briefly and I'll get back to you promptly.
Get in touch →In software development, "SOLID" stands for a set of principles that produce cleaner, more maintainable code. Even if you as a client rarely interact with the code directly: you will notice the difference sooner or later. In further development, in performance, in costs.
With the mindset of "the client won't notice anyway," small projects are often rushed and billed at a flat rate. Six months later, when new features need to be added, the rude awakening begins: development suddenly takes longer and costs significantly more. Poorly written code always comes back to haunt you.
I build on clean architecture from the start. It costs a little more initially but saves time and money with every extension. Your project will be maintainable, testable, and future-proof.
More reviews on my Google Business profile.
Mr. Skibbe impresses not only with his professional and personal approach to clients, but also with his competence in technical areas. We look forward to future .NET and other projects.
I look forward to continued collaboration so that our software challenges can be developed in a modern, fast, and lean way.
Top service and rapid live development of my employee management software. Happy to work together again!
I'm self-employed and constantly working on new projects. Robert gets involved, brings ideas to the table, and implements them incredibly fast!
Smaller projects typically cost around €500, mid-sized projects around €1,300, and large or complex projects several thousand euros. The exact price depends on scope, deadline, and desired code quality. Hourly billing provides more flexibility and cost control than fixed-price contracts.
The most widely used .NET programming languages are C# (C-Sharp) and VB.NET (Visual Basic .NET). Both run on the same runtime (CLR) and share the same framework libraries. C# clearly dominates in practice, while VB.NET remains common in legacy systems.
WinForms is suited for simple, quickly built desktop applications. WPF is more modern, offers greater design freedom through XAML, and supports clean architecture patterns like MVVM. For new projects, WPF is the recommended choice as it is more future-proof and maintainable.
A good .NET developer should have demonstrable project experience and be able to explain architectural decisions clearly. Cheap developers from bargain platforms often deliver unmaintainable code that becomes more expensive in the long run. Freelancers specializing in .NET typically offer the best balance of quality, flexibility, and direct communication.
.NET software development refers to building applications on Microsoft's .NET framework. Typical use cases include Windows desktop applications (WinForms, WPF), class libraries, and services. The most widely used language is C#, alongside VB.NET.
The most common mistakes are: no project plan before starting, unrealistic budget estimates, choosing the cheapest provider without quality checks, and failing to plan for roles like design, marketing, and legal. Clean .NET development means maintainable code – it pays off at the latest when extending the software.
Source code ownership is a matter of contract. By default, copyright belongs to the developer unless the contract states otherwise. An explicit agreement on full code transfer or licensing should be made in writing before the project starts.
Modern source code is stored in version control systems like Git (e.g. GitHub, GitLab, Azure DevOps). This enables full version history, collaboration across developers, and secure backups.
Looking for an experienced .NET developer for your next software project? Whether WinForms development, WPF, C#, or VB.NET: with over 15 years of experience, clean architecture, and direct communication, I'll bring your project to the finish line.
Drop me a line – no obligations. I'll get back to you within 24 hours.
kontakt@robbelroot.de