Role · Engineering

How to hire a Mobile Developer

Mobile developers build the apps your users carry in their pockets — native (iOS or Android) or cross-platform (React Native, Flutter). In India, where mobile is the primary way most people access the internet, mobile developers directly shape the user experience for millions. The difference between a good mobile hire and a bad one shows up in app store ratings, crash rates, and user retention.

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Why this role is hard to hire

The hiring challenge

Platform-specific depth matters far more than mobile developers' resumes suggest. A candidate with "3 years of React Native experience" may have never written a native module, handled background tasks, or dealt with platform-specific permissions. A strong iOS developer may know nothing about Android layout patterns. The interview needs to test for the specific platform skills your product requires, not just general mobile knowledge. Additionally, mobile apps have unique challenges — performance on low-end devices, offline behaviour, and app store release processes — that web developers rarely think about.

What to look for in a Mobile Developer

Four traits matter: Platform depth (do they understand the fundamentals of the platform they work on — lifecycle, memory management, permissions — or just the framework on top?). Performance awareness (do they think about app size, startup time, and battery usage, especially on low-end devices?). User experience sensitivity (do they build apps that feel native and smooth, or apps that technically work but feel wrong?). Release discipline (do they understand app store review processes, versioning, and staged rollouts?).

For Indian companies, mobile development carries extra weight because most Indian users are on Android, often on budget devices with limited memory and storage. Test for experience with performance optimisation on low-end hardware, offline-first design (network connectivity is inconsistent in tier-2 and tier-3 cities), and comfort with regional language support if your app serves non-English-speaking users.

Common mistakes when hiring Mobile Developers

Assuming cross-platform means platform-agnostic. A React Native or Flutter developer still needs to understand native platform behaviour for things like push notifications, background tasks, and device permissions. If they have never touched native code, they will get stuck when the framework does not handle a platform-specific need.

Not testing on real devices. A candidate whose app runs perfectly on a simulator may never have dealt with real-world issues like memory pressure, slow networks, or varying screen sizes. Ask about their testing process and whether they test on actual devices.

Ignoring app store experience. Getting an app through the review process, handling versioning, and managing staged rollouts are skills that take experience. A candidate who has only worked on internal apps may struggle with public release workflows.

What to test

Key skills for a Mobile Developer

Platform fundamentals (iOS or Android)
Cross-platform fluency (React Native or Flutter)
State management
Performance optimisation (memory, battery, app size)
Release engineering and app store processes
Offline-first design
Debugging on real devices
User experience sensitivity

Sample questions

What a great interview looks like

Coding

"Implement a paginated infinite list with pull-to-refresh."

Voice

"Walk me through a mobile bug that was hard to reproduce. How did you find it?"

Voice

"Tell me about a time you had to optimise app performance on a low-end device. What was the issue and what did you do?"

Scenario

"Your app is crashing for 5% of users but you cannot reproduce it on your device. Walk me through your investigation."

Voice

"How do you handle a situation where a feature works differently on iOS and Android? Give me an example."

Every question is from the GoodFit library. Customize the rubric for your context in the platform.

Suggested format

Recommended interview process

Round 1: AI Voice Interview

15 min

Platform depth assessment, past project walkthrough, and performance awareness discussion.

Round 2: Coding Assessment

60 min

Build a mobile feature with real constraints — pagination, offline handling, or platform-specific behaviour.

Round 3: Engineering Manager Interview

45 min

Release process discussion, collaboration style, and team fit. Only candidates who cleared Rounds 1-2.

Want to set up this interview process for your Mobile Developer openings? GoodFit handles Rounds 1 and 2 automatically. Your team only steps in for the final conversation.

Set this up with GoodFit

Ready-made template