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Backend Developer Interview Questions

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9,172 backend developer interview questions shared by candidates

- Explain polymorphism - Explain inheritance - What’s the difference between pass by value and pass by reference? - Where does Python store data on the stack or the heap? - How does a dictionary work under the hood in Python? - Name some design patterns and when you’ve used them - What's one thing/project in your career that you're most proud of and why?
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Backend Software Engineer

Interviewed at Wayflyer

3.8★
Jul 16, 2025

- Explain polymorphism - Explain inheritance - What’s the difference between pass by value and pass by reference? - Where does Python store data on the stack or the heap? - How does a dictionary work under the hood in Python? - Name some design patterns and when you’ve used them - What's one thing/project in your career that you're most proud of and why?

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