What programming languages are you proficient in? Can you give me an example of a project you worked on in one of those languages? How do you approach debugging a program? Can you walk me through a time when you had to debug a particularly challenging issue? Have you worked with version control before? Which version control systems are you familiar with? Can you explain a workflow you have used with version control? In your opinion, what is the most important factor in designing a scalable and efficient database schema? Tell me about a time when you had to learn a new programming language or technology quickly for a project. How did you approach the challenge, and what did you learn from the experience?