I’m a .NET developer with about 2 years of experience, and I recently got a technical interview that included advanced topics. The interview is expected to cover:
- C# programming tasks
- Algorithms
- Database/system architecture
- Advanced DB queries
While I’m confident in architectural discussions and my day-to-day work, I’m unsure what “advanced C# programming tasks” or algorithm challenges might involve.
I’m looking for examples of c# interview questions or tasks that are commonly asked for mid-level to advanced .NET developers, including:
- Language-specific C# features (LINQ, async/await, delegates, events, generics, etc.)
- Problem-solving or algorithm challenges in C#
- Database-related questions or advanced queries
- System design or architecture scenarios
What are the typical tasks or questions I should prepare to feel confident for an advanced C#/.NET interview?
When i prepared for the interview i was questioned around language-specific questions assess familiarity with C# features. Candidates may need to explain async/await, delegates, events, LINQ, and generics.
A good answer discusses both syntax and rationale, such as how generics improve type safety, or how LINQ enables concise and readable data queries, with practical examples from previous projects.
You can follow this guide on C# Interview Questions they have covered all the questions based on different level from basic to advance so that you can prepare well.
I agree with @miro.vasil you could be asked to implement efficient filtering or aggregation methods, manipulate strings, or perform searches and sorts.
its better to have strong response demonstrates not just a working solution but also awareness of efficiency, readability, and best practices in C#.
You must also focus from architecture and database questions assess system-level thinking. You may be asked how to design a microservice in .NET Core, optimize Entity Framework queries, or handle thread safety and concurrency.
Good answers combine technical understanding with practical experience, explaining trade-offs, performance considerations, and real-world application.