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Senior Software Developer Interview Questions

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7,039 senior software developer interview questions shared by candidates

Explain the difference between BlocBuilder, BlocListener, BlocConsumer, and BlocSelector. What is the difference between Future and Stream in Dart? Explain Flutter's Widget Tree, Element Tree, and Render Object Tree. What is the purpose of the mounted property in Flutter? How would you implement push notifications for a specific audience using Firebase? Explain abstraction and inheritance in Dart with examples. What are Flutter lifecycle methods and how are they affected by screen rotation? Explain state management approaches such as BLoC and Riverpod. What is technical debt and how do you manage it in a project? Describe a challenging issue you faced in a Flutter application and how you resolved it.
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Senior Software Developer

Interviewed at Ipsator

4.2★
Jun 8, 2026

Explain the difference between BlocBuilder, BlocListener, BlocConsumer, and BlocSelector. What is the difference between Future and Stream in Dart? Explain Flutter's Widget Tree, Element Tree, and Render Object Tree. What is the purpose of the mounted property in Flutter? How would you implement push notifications for a specific audience using Firebase? Explain abstraction and inheritance in Dart with examples. What are Flutter lifecycle methods and how are they affected by screen rotation? Explain state management approaches such as BLoC and Riverpod. What is technical debt and how do you manage it in a project? Describe a challenging issue you faced in a Flutter application and how you resolved it.

R1: encapsulation, pattern search (asked for KMP algo), hash map internal R2: morris inorder travesal, executive service Vs executor, soap vs rest R3: print numbers using even and odd thread, singleton initialization in multithreading,implement connection pool, class level lock vs object level lock
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Senior Software Developer

Interviewed at Bounteous x Accolite

3.3★
Sep 15, 2017

R1: encapsulation, pattern search (asked for KMP algo), hash map internal R2: morris inorder travesal, executive service Vs executor, soap vs rest R3: print numbers using even and odd thread, singleton initialization in multithreading,implement connection pool, class level lock vs object level lock

1) Implement Blocking Queue in Java 2) Difference b/w HashMap and concurrent hashmap 3) Implement LRU Cache in Java 4) Design URL shortner application 5) Check if string anagrams have one as palindrome string. 6) Array sort 1 to 100 elements in O(n) time
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Senior Software Developer

Interviewed at Bounteous x Accolite

3.3★
Apr 13, 2018

1) Implement Blocking Queue in Java 2) Difference b/w HashMap and concurrent hashmap 3) Implement LRU Cache in Java 4) Design URL shortner application 5) Check if string anagrams have one as palindrome string. 6) Array sort 1 to 100 elements in O(n) time

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