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Backend Developer Interview Questions

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9,181 backend developer interview questions shared by candidates

Cant discuss to many details, but the first onsite interview was a pretty typical algorithm based question with whiteboarding coding. It involved discussing time complexities as well as estimations around space and CPU cycles. The second question was more hands-on with actual coding using a provided laptop alongside two different engineers. You get heaps of info about what to expect before heading onsite.
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Backend Software Engineer

Interviewed at Canva

3.9★
Jul 8, 2019

Cant discuss to many details, but the first onsite interview was a pretty typical algorithm based question with whiteboarding coding. It involved discussing time complexities as well as estimations around space and CPU cycles. The second question was more hands-on with actual coding using a provided laptop alongside two different engineers. You get heaps of info about what to expect before heading onsite.

1. Introduce yourself. 2. How you are doing code reviews? Use a tool or not 3. Explain the way of working JWT tokens 4. What are static and instance blocks in Java? 5. What is autowired and what aurowired by name and type in spring? 6. Why do we use packages in Java? 7. What is the difference between a hashmap and a concurrent hashmap?
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Backend Developer

Interviewed at NCS

3.7★
Nov 21, 2023

1. Introduce yourself. 2. How you are doing code reviews? Use a tool or not 3. Explain the way of working JWT tokens 4. What are static and instance blocks in Java? 5. What is autowired and what aurowired by name and type in spring? 6. Why do we use packages in Java? 7. What is the difference between a hashmap and a concurrent hashmap?

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