What should I say about the hardest bug in my project?
Describe a specific, hard bug and your debugging process. Interviewers want to see how you approach debugging, not just that you fixed it. Specifics show real experience and problem-solving ability.
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More FAQs in Deep-Dive Interview Questions on a React Project You Built
Be ready to walk through the architecture, justify your major choices, describe a specific hard bug and how you debugged it, discuss how you would scale it, name what you would do differently, and explain state flow for a key feature.
By explaining the trade-offs. For every major choice, know why: Firebase over a custom backend, TMDB over a custom API, React Query over Redux. Trade-offs show engineering judgment, which interviewers value.
Discuss what you would change for more users: better caching, virtualization, splitting the app into chunks, a real backend, and so on. This shows systems thinking and awareness of scale, even if your project is small.
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