Junior
Basic syntax, data types, functions, language fundamentals, common methods, simple code behaviour and basic errors.
- Questions
- 20 questions
- Estimated time
- 15–20 min
C#
C# Interview Test & Quiz
Each attempt draws a fresh random selection, so no two are the same. Results are never stored — only an unfinished attempt is kept, so you can come back to it.
Middle
More complex language behaviour, asynchronous programming where relevant, error handling, performance, production scenarios and architectural decisions.
- Questions
- 20 questions
- Estimated time
- 20–25 min
Senior
Language internals, architecture, optimisation, scaling, security, edge cases and trade-offs between different solutions.
- Questions
- 20 questions
- Estimated time
- 25–35 min
Coding Challenge
Open-ended practical tasks where you write code instead of selecting an answer.
- Questions
- 5 tasks
- Estimated time
- 20–40 min