Welcome to your interview.
The question is on your right: Systematic Debugging for Complex Bugs. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Debugging is a core engineering skill because complex failures often involve multiple components, incomplete signals, and misleading symptoms. Interviewers want to see whether you can reduce ambiguity and investigate issues methodically.
Describe your approach to debugging a complex software issue. In your answer, explain:
Focus on a practical, engineering-oriented process rather than a personal anecdote. The interviewer expects a structured framework, clear prioritization, and discussion of tools such as logs, metrics, tracing, breakpoints, and targeted tests. You should also mention how you handle uncertainty, avoid premature conclusions, and communicate progress while debugging.