Some questions to a developer (on developer's day in Brazil)

• What is SOLID?
• Why is the Single Responsibility Principle important?
• What is Inversion of Control? How does that relate to dependency injection?
• How does a 3 tier application differ from a 2 tier one?
• Why are interfaces important?
• What is the Repository pattern? The Factory Pattern? Why are patterns important?
• What are some examples of anti-patterns?
• Who are the Gang of Four? Why should you care?
• How do the MVP, MVC, and MVVM patterns relate? When are they appropriate?
• Explain the concept of Separation of Concerns and it’s pros and cons.
• Name three primary attributes of object-oriented design. Describe what they mean and why they’re important.
• Describe a pattern that is NOT the Factory Pattern? How is it used and when?
• You have just been put in charge of a legacy code project with maintainability problems. What kind of things would you look to improve to get the project on a stable footing?
• Show me a portfolio of all the applications you worked on, and tell me how you contributed to design them.
• What are some alternate ways to store data other than a relational database? Why would you do that, and what are the trade-offs?
• Explain the concept of convention over configuration, and talk about an example of convention over configuration you have seen in the wild.
• Explain the differences between stateless and stateful systems, and impacts of state on parallelism.
• Discuss the differences between Mocks and Stubs/Fakes and where you might use them (answers aren’t that important here, just the discussion that would ensue).
• Discuss the concept of YAGNI and explain something you did recently that adhered to this practice.
• Explain what is meant by a sandbox, why you would use one, and identify examples of sandboxes in the wild.
• Concurrency
  • What’s the difference between Locking and Lockless concurrency models?
  • What kinds of problems can you hit with locking model? And a lockless model?
  • What trade offs do you have for resource contention?
  • How might a task-based model differ from a threaded model?
  • What’s the difference between asynchrony and concurrency?
• Are you still writing code? Do you love it?
• You’ve just been assigned to a project in a new technology how would you get started?
• How does the addition of Service Orientation change systems? When is it appropriate to use?

Your thoughts? I’ll add good questions from the comments throughout the day.