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10,457 lead android developer interview questions shared by candidates

1. Write a callback method between two classes and show how do they communicate? 2. Consider an array of students ss=[20,30,40,60,70,80....] and lower limit array ll=[10,30,70]and upper limit array ul=[40,60,100] . Print the count of students between upper and lower limit. 3. How do you perform the above program if there is 5 billion elements in the array
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Android Developer

Interviewed at Tech Mahindra

3.4★
Nov 28, 2018

1. Write a callback method between two classes and show how do they communicate? 2. Consider an array of students ss=[20,30,40,60,70,80....] and lower limit array ll=[10,30,70]and upper limit array ul=[40,60,100] . Print the count of students between upper and lower limit. 3. How do you perform the above program if there is 5 billion elements in the array

Technical round : * Questions were mainly in Kotlin. * MVVM, LiveData, Services, Broadcast receivers, Kotlin scope functions, Coroutines, data class * 5 coding questions were there. 2 basic programming questions, 3 output printing questions to check your knowledge in coroutine concept, data class concept and oops concept Manager Round: Questions on your past projects Related to app performance Memory leaks and many more
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Senior Android Developer

Interviewed at QBurst

4.1★
Apr 25, 2023

Technical round : * Questions were mainly in Kotlin. * MVVM, LiveData, Services, Broadcast receivers, Kotlin scope functions, Coroutines, data class * 5 coding questions were there. 2 basic programming questions, 3 output printing questions to check your knowledge in coroutine concept, data class concept and oops concept Manager Round: Questions on your past projects Related to app performance Memory leaks and many more

Wriiten test contains 25 questions Number of threads in AsynTask, time limit of ANR, Broadcast Receiver time limit, abbreviations of JNI,ADB, sticky intent, immutable object etc. Technical interview is taken by senior person. He asked some questions in wriiten and basics of Java, Android.
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Senior Android Developer

Interviewed at Fiserv

3★
Oct 23, 2017

Wriiten test contains 25 questions Number of threads in AsynTask, time limit of ANR, Broadcast Receiver time limit, abbreviations of JNI,ADB, sticky intent, immutable object etc. Technical interview is taken by senior person. He asked some questions in wriiten and basics of Java, Android.

During the interview, only a few basic questions were asked, mainly around Android and Kotlin coroutines: What is a coroutine in Kotlin and why is it used? What is the difference between launch and async? What are different coroutine dispatchers (Main, IO, Default)? What is the role of suspend functions? Basic understanding of MVVM architecture What is Retrofit and how do you use it in Android? Difference between var and val in Kotlin
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Senior Android Developer

Interviewed at Tech Mahindra

3.4★
Apr 1, 2026

During the interview, only a few basic questions were asked, mainly around Android and Kotlin coroutines: What is a coroutine in Kotlin and why is it used? What is the difference between launch and async? What are different coroutine dispatchers (Main, IO, Default)? What is the role of suspend functions? Basic understanding of MVVM architecture What is Retrofit and how do you use it in Android? Difference between var and val in Kotlin

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