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Senior Mobile Engineer Interview Questions

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214 senior mobile engineer interview questions shared by candidates

Design an event tracking system with a tracking function to monitor events. There will be two event types: high-priority events, which should be sent to the server immediately upon arrival, and low-priority events, which can be cached locally and uploaded in batches every 10 seconds or so. Ensure that validation and enrichment are performed when events are received.
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Senior Software Engineer, Mobile IOS

Interviewed at Grab

3.8★
Mar 20, 2025

Design an event tracking system with a tracking function to monitor events. There will be two event types: high-priority events, which should be sent to the server immediately upon arrival, and low-priority events, which can be cached locally and uploaded in batches every 10 seconds or so. Ensure that validation and enrichment are performed when events are received.

Q: Explain architecture and domain-level design to a chat screen's functionality including inputs, interactive elements, network calls, UI, architecture, etc. Q (challenge): Take-home challenge is doing said application in a real-world scenario, given their provided API.
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Senior Mobile Software Engineer (Android)

Interviewed at Genesys

4.2★
Apr 25, 2023

Q: Explain architecture and domain-level design to a chat screen's functionality including inputs, interactive elements, network calls, UI, architecture, etc. Q (challenge): Take-home challenge is doing said application in a real-world scenario, given their provided API.

The process was pretty complex and it was simplified a bit since then, and it was pretty impressing. They don't do any silly gotcha coding questions. They do test basic CS fundamentals pretty heavily, but they are smart about it. Mobile platform questions. Simple coding question in Java, Objective-C and C++, questions about platform API (basics to check if you really code in it), and multithreading concepts. Take home assignment - optimization problem (I believe they don't do it any more) with elements of OOD. On-site coding round (leetcode style puzzles, basic CS concepts, data structures, threading, memory management, code review). On-site design round. Designing complete mobile app, frontend and backend (architecture, no visuals). Discussing various constraints, changing requirements as you go, to check if your design is adaptable. On-site company culture fit round with manager. HR round with compensation expectations. On-site team culture fit round with direct team lead.
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Senior Software Engineer (Mobile Applications)

Interviewed at Bloomberg

4★
Dec 21, 2021

The process was pretty complex and it was simplified a bit since then, and it was pretty impressing. They don't do any silly gotcha coding questions. They do test basic CS fundamentals pretty heavily, but they are smart about it. Mobile platform questions. Simple coding question in Java, Objective-C and C++, questions about platform API (basics to check if you really code in it), and multithreading concepts. Take home assignment - optimization problem (I believe they don't do it any more) with elements of OOD. On-site coding round (leetcode style puzzles, basic CS concepts, data structures, threading, memory management, code review). On-site design round. Designing complete mobile app, frontend and backend (architecture, no visuals). Discussing various constraints, changing requirements as you go, to check if your design is adaptable. On-site company culture fit round with manager. HR round with compensation expectations. On-site team culture fit round with direct team lead.

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