C# Developer Interview Questions
The goal for a successful interview for a C# Developer is to demonstrate strong knowledge of C# programming language, showcase experience developing applications using this language, and display the ability to solve problems and provide efficient solutions using C#.
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Situational interview questions
- A client is reporting errors in the website you built using C#. How do you approach debugging the issue and finding a solution?
- There is a major functionality that needs to be added to an existing C# application you are working on. How do you approach planning and implementing this new feature?
- The performance of a C# application you built is not meeting the desired benchmarks. How do you go about identifying performance bottlenecks and optimizing the application?
- You are assigned to develop a new C# application from scratch. How do you begin the planning and design process, while keeping scalability and maintainability in mind?
- A team member who was working on a C# project has left the company mid-way. How would you approach taking over their work, understanding their code, and collaborating with your new team?
Soft skills interview questions
- Can you describe a situation where you had to work collaboratively with cross-functional teams to solve a problem in a project?
- Have you ever faced a situation where you had to communicate technical information to a non-technical person? How did you handle it and what were the results?
- How do you handle criticism or feedback on your work? Can you provide an example of a time when you received constructive criticism from your team lead/manager?
- Describe a situation where you had to prioritize tasks and manage your time effectively to meet project deadlines while maintaining quality work.
- Have you ever dealt with a difficult team member or client? How did you approach the situation and resolve it effectively while maintaining a positive relationship?
Role-specific interview questions
- Can you explain the differences between an interface and an abstract class in C#?
- How do you handle exceptions in your C# code?
- Have you ever worked with multi-threading in C#? Can you give an example of when and how you implemented it?
- What is LINQ and how have you used it in your C# projects?
- How do you ensure secure coding practices in your C# applications? Can you give an example of a security measure you implemented?
STAR interview questions1. Can you describe a situation where you faced a particularly challenging C# coding problem?
- Situation: Challenging coding problem
- Task: Finding a solution for the coding problem
- Action: Steps taken to solve the coding problem
- Result: Outcome of the solution
2. What was your role in a project where you had to develop a C# application?
- Situation: C# application development project
- Task: Your role in the project
- Action: Steps taken to fulfill your role
- Result: Outcome of the project
3. Can you discuss a time when you had to troubleshoot a C# program that was not working correctly?
- Situation: Troubleshooting a C# program
- Task: Identifying the issue and fixing it
- Action: Steps taken to fix the program
- Result: Outcome of the troubleshooting and resolution
4. What was your approach to testing and debugging C# code of a complex application?
- Situation: Testing and debugging a complex C# application
- Task: Your approach to testing and debugging
- Action: Steps taken to test and debug the application
- Result: Outcome of the debugging and testing process
5. Can you describe a situation where you implemented a major feature in a C# application?
- Situation: Implementing a major feature in a C# application
- Task: Your role in implementing the feature
- Action: Steps taken to implement the feature
- Result: Outcome of the implementation of the feature