Core Technical Skills

What this skill does

Core Technical Skills focus on advanced proficiency in C# and modern .NET development, emphasizing the latest language features and framework capabilities. It includes expertise in Avalonia UI for building cross-platform interfaces and mandates strict adherence to MVVM architecture to maintain a clean separation between UI and business logic. Practitioners also apply principles of clean code and clean architecture to ensure maintainability and inward dependency flow, alongside functional and reactive programming techniques using tools like DynamicData and System.Reactive.

This skill ensures developers create modular, predictable, and stable applications with immutable data structures and well-defined public APIs. It supports scalable UI development with a foundation that prioritizes long-term stability and clear abstraction boundaries, essential for performance-driven, maintainable software projects.

Who it's for

This skill is essential for software engineers working on cross-platform desktop applications who need to maintain rigorous architectural discipline. It suits technical leads responsible for enforcing clean code standards and scalable patterns within .NET teams. Additionally, it benefits architects designing maintainable systems that require a strict separation of concerns and reactive data flows.

Growth-focused product developers integrating complex business logic with responsive UIs will also find this skill critical for balancing rapid iteration with architectural robustness.

Key workflows

Practitioners start by designing UI components strictly following the MVVM pattern, ensuring all logic remains independent of the interface. Next, they apply composition over inheritance to build modular features, avoiding brittle class hierarchies. They then implement functional programming patterns to enforce immutability and predictable state management, reducing side effects during runtime. Finally, they integrate reactive programming with libraries like DynamicData to manage asynchronous data streams and user interactions efficiently, supporting responsive and maintainable applications.

Throughout, developers continuously refine public APIs for stability and clarity, facilitating long-term maintenance and integration.

Common questions

How do I enforce MVVM without mixing UI and business logic? Keep all state and commands within ViewModels, avoiding code-behind in views. What is the benefit of composition over inheritance in this context? It reduces tight coupling and improves modularity, making features easier to test and extend. How does reactive programming improve application responsiveness? It allows real-time updates and asynchronous event handling with clear, declarative data flows.

How to use in Metaflow

Attach the Core Technical Skills to any Metaflow agent tasked with developing or reviewing .NET-based UI projects. Expect the agent to emphasize strict MVVM architecture, modular design, and reactive patterns that improve maintainability and responsiveness. This skill guides the agent to prioritize clean code principles and stable API design, enhancing long-term project health and performance. For more detailed guidance, see...

For broader context, see our roundup of claude skills for marketing, and read Claude Code workflows for marketing agencies for related setup guidance.