RTS Questionnaire · Question 26 of 52 · file: answers/q26.html
Have you developed multi-layered .NET applications? [with a focus on loose coupling, high cohesion, and separation of concerns?]
.NETArchitectureSOLID
✅ Yes — layered .NET solutions with explicit separation of concerns are exactly how I structure applications.
🧪 Interactive proof: this answer has its own page with a live layering workflow, the domain, application and infrastructure code behind it and the acceptance criteria — open the Q26 layered-.NET proof →
Technical detail
- 🧱 Typical solution layout — Presentation (Web API/MVC or Angular-facing endpoints) → Application (use cases/orchestration, DTOs, validation) → Domain (entities, value objects, business rules, domain services) → Infrastructure (EF Core/ADO.NET, external services, messaging, storage).
- 🔗 Loose coupling — dependency inversion with interfaces owned by the inner layers, constructor injection, mediator/handler-style use cases, events or domain notifications instead of direct cross-layer calls, and no leaking of EF entities across the API boundary (DTO mapping instead).
- 🎯 High cohesion — each layer and class has one reason to change: controllers only translate HTTP, handlers only orchestrate a use case, domain objects own their invariants, repositories only persist. Cross-cutting concerns (logging, caching, retries, transactions, auth) are implemented once as middleware, filters or decorators.
- 🧪 Testability — the domain and application layers are unit-testable without a database, integration tests cover handlers with a real container and in-memory/SQLite database, and API contract tests validate the endpoints wire correctly.
📌 Because the boundaries are explicit, teams can grow the system safely: new features are additive, infrastructure can be replaced, and code reviews focus on business rules instead of plumbing.
🧾 CV evidence: CV .NET technologies with Dependency Injection and layered architecture; 2025/2026 CV highlights secure REST APIs with Spring Boot layered/hexagonal delivery (API, application, domain, infra) transferred across stacks; SOLID principles highlighted in the CV header.