How to answer this Behavioural interview question about Debugging for Any Frontend Software Engineer?

Describe a challenging bug you encountered in a recent project and how you resolved it.

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Frontend Software Engineer

Behavioural

Asked at

Shopify

Difficulty :

Medium

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A popular meme image featuring the Marvel character Thanos with the caption “A small price to pay for salvation,” commonly used to humorously express acceptance of a minor sacrifice for a greater benefit.

Explanation

This question is designed to evaluate your problem-solving skills, persistence, and ability to work under pressure. Recruiters are interested in how you approach debugging and whether you can communicate the technical complexity clearly. A good answer narrates the challenge, the steps taken to diagnose and resolve the issue, and the outcome. Avoid blaming external factors or providing overly simplistic resolutions. Focus on the process and highlight teamwork or resourcefulness if applicable.

A popular meme image featuring the Marvel character Thanos with the caption “A small price to pay for salvation,” commonly used to humorously express acceptance of a minor sacrifice for a greater benefit.

Answer Example

In a recent project, I encountered a bug where a dynamic dropdown menu failed to display correctly in older browsers. After reproducing the issue, I discovered that the problem stemmed from unsupported JavaScript features in those environments. My first step was to implement a polyfill for the missing features and test compatibility. When the issue persisted, I rewrote the dropdown component using progressive enhancement principles, ensuring basic functionality for all browsers while retaining advanced features for modern ones. This approach not only resolved the bug but also improved the maintainability of the codebase.

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