Top 47
Prep plan
Updated weekly · Last refresh Oct 17

Photon Mobile Engineer Interview Questions

The questions to prepare for a Photon Mobile Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 27 questions · ~268 min
Detect Duplicates in ArrayEasy
Practice

Use a hash set to detect whether an integer array contains any duplicate in O(n) time.

Hash TablesArraysPhoton
First Non-Repeated CharacterEasy
Practice

Use a hash table frequency count and a second pass to return the first non-repeated character in a string.

Hash Tablesfrequency countStringsPhoton
Reverse String In PlaceEasy
Practice

Reverse a string using a two-pointer approach by converting it to a mutable character list in Python.

CodingStringsProgrammingPhoton
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2
Technical Fundamentals10 questions · ~99 min
Jetpack Compose Async ConsistencyMedium

Assesses your approach to state management and async consistency in Compose-based apps.

data consistencyPhoton
Optimize Retrofit ClientMedium

Tests networking configuration skills, performance considerations, and reliability practices.

network requeststechnical knowledgePhoton
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3
Software Architecture3 questions · ~30 min
React Native New ArchitectureHard

Tests deep React Native architecture knowledge and performance reasoning.

performancearchitecturePhoton
MVVM vs MVP vs MVCMedium

Tests your architectural understanding and ability to compare patterns for maintainability.

architecturetechnical knowledgeFrameworksPhoton
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4
Behavioral & Leadership6 questions · ~59 min
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5
More topics1 question · ~10 min
SSL Pinning for Secure CallsHard

Tests mobile security fundamentals and practical implementation details for TLS pinning.

network requestsSecuritytechnical knowledgePhoton
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