Lead Android Developer Interview Questions

6,398 lead android developer interview questions shared by candidates

Questions were stick to basics only. -Android components -oops concept -Threading -activity lifecycle -Fragment lifecycle -Singleton - Other Design Patterns - Jetpack components - Dagger 2 - Coroutine - val vs var - Adbstact class vs interface - Pipelining No question were asked in depth.
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Android Developer

Interviewed at Infosys

3.6
Jul 5, 2021

Questions were stick to basics only. -Android components -oops concept -Threading -activity lifecycle -Fragment lifecycle -Singleton - Other Design Patterns - Jetpack components - Dagger 2 - Coroutine - val vs var - Adbstact class vs interface - Pipelining No question were asked in depth.

Esta me la pasó por escrito a través del chat: Can you explain how a mobile app should interact with a backend when performing operations that must be idempotent (e.g., sending a payment or submitting a form)? Please include how idempotency keys are generated, stored, and reused across retries.
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Android Developer

Interviewed at Revolut

4
Sep 11, 2025

Esta me la pasó por escrito a través del chat: Can you explain how a mobile app should interact with a backend when performing operations that must be idempotent (e.g., sending a payment or submitting a form)? Please include how idempotency keys are generated, stored, and reused across retries.

They asked me to walk them through the single most important question I was given during the entire process. They wanted to know exactly what the question was, why it mattered, how I approached it, and what my thinking looked like as I worked through it. In other words, they were trying to understand not only the content of the question but also the way I reasoned about it and explained my thought process.
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Android Engineer

Interviewed at Kredivo Group

4.3
Nov 22, 2025

They asked me to walk them through the single most important question I was given during the entire process. They wanted to know exactly what the question was, why it mattered, how I approached it, and what my thinking looked like as I worked through it. In other words, they were trying to understand not only the content of the question but also the way I reasoned about it and explained my thought process.

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