Lead Backend Developer Interview Questions

15,499 lead backend developer interview questions shared by candidates

Why do you want to change your company? What do you find challenging in your current position? How is memory managed in Java? When is an object erased from memory? What’s the name of a GC? What's the difference between hashmap and hashtable? What's the time complexity to insert and retrieve in a hashmap? In an array? Worst case? Elaborate on the amortized time complexity for array. How can you guarantee consistency in the database transactions? If you have a mutex?
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Backend Software Engineer

Interviewed at PayPay

3.4
Jan 15, 2021

Why do you want to change your company? What do you find challenging in your current position? How is memory managed in Java? When is an object erased from memory? What’s the name of a GC? What's the difference between hashmap and hashtable? What's the time complexity to insert and retrieve in a hashmap? In an array? Worst case? Elaborate on the amortized time complexity for array. How can you guarantee consistency in the database transactions? If you have a mutex?

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