Mobile developers build and maintain apps for iOS and Android — from consumer-facing products with millions of users to internal enterprise tools that warehouse staff use on handheld scanners. You'll work in product teams alongside designers, backend engineers, and product managers, shipping new features in two-week sprints and fixing bugs that only appear on specific device and OS combinations at 2am. Most mobile developers report to an engineering manager or tech lead. The job splits between writing clean, performant code and navigating the specific constraints of mobile — battery, memory, offline behaviour, and app store review processes.
Megan Torres
Mobile App Developer
📍 Austin, TX✉️ megan.torres@email.com
Summary
Mobile App Developer with 4 years of experience building iOS and cross-platform applications using Swift and React Native. Published 3 apps with 500K+ combined downloads. Passionate about performant UIs and accessibility.
Work Experience
iOS Developer at BumbleAug 2022 — Present
Develop features for Bumble iOS app used by 40M+ monthly active users worldwide
Led SwiftUI migration reducing UI code complexity by 45% across 30+ screens
React Native Developer at HeadspaceJan 2021 — Aug 2022
Built cross-platform features for meditation app with 2M+ daily active users
Developed offline-first content caching system reducing data usage by 60%
Skills
Swift / SwiftUIReact NativeXcode & InstrumentsREST APIs / GraphQLCore Data / RealmApp Store SubmissionCI/CD (Fastlane)Accessibility (WCAG)
What Recruiters Look For
Mobile Developer CVs must show app scale, technical depth, and platform expertise. Recruiters want to see download numbers, DAU/MAU figures, performance improvements, and your platform specialism (iOS, Android, or cross-platform).
Key Skills to Include
Swift/SwiftUI, Kotlin/Jetpack Compose, React Native, Flutter, App Store submission, CI/CD (Fastlane), REST APIs, and accessibility (WCAG).
Common Mistakes
Not showing app scale. "Built an iOS app" is a task. "Developed features for an app with 40M+ MAU, improving launch time by 28%" shows real impact.
Formatting Tips
One to two pages. Include a Published Apps section with download counts. Link to your GitHub. Group skills by platform: iOS, Android, Cross-Platform, Dev Tools.
Average Salary — Mobile App Developer
United States
$105,000 – $155,000
United Kingdom
$65,000 – $105,000
Germany
$68,000 – $105,000
UAE / Dubai
$65,000 – $100,000
Canada
$85,000 – $130,000
Australia
$90,000 – $135,000
Figures in USD. Ranges reflect mid-level experience (3–7 years). Senior roles and major metro areas typically sit at the top of these bands.
Top 5 Interview Questions — Mobile App Developer
1How do you approach performance optimisation in a mobile app that's feeling sluggish?
Walk through profiling first (Instruments on iOS, Android Profiler), then identifying specific bottlenecks — main thread work, excessive redraws, heavy image loading. Show you diagnose before you optimise, and mention specific tools.
2Explain your approach to handling offline functionality and data sync.
Cover local persistence (Core Data, Room, SQLite), optimistic UI updates, conflict resolution strategies, and handling sync failures gracefully. This is a real differentiator question — vague answers about "caching" don't cut it.
3Walk me through how you'd handle a crash that only reproduces on iOS 16 on an iPhone SE.
Describe your debugging process: reproducing on physical device, crash logs via Xcode or Firebase Crashlytics, checking API differences in iOS 16, and testing edge cases around screen size. Shows you can work methodically when conditions are hard to replicate.
4Tell me about a time you had to make a significant technical decision under time pressure.
Be specific about the trade-offs involved — technical debt accepted, a third-party library chosen over a custom solution, a feature scoped down. Show how you made the call and whether you'd make the same one again.
5What's your experience with React Native or Flutter, and how do you decide between cross-platform and native development?
Give a nuanced answer — cross-platform is faster and cheaper, native is better for complex animations, camera/biometric features, or performance-critical apps. Reference a real decision you've made and the reasoning behind it.
How to Tailor Your CV
Consumer app companies like Spotify, Monzo, and Airbnb want to see apps you've shipped at scale — download numbers, DAU/MAU, crash rates, and performance metrics. Link your App Store or Play Store listings directly in your CV. For fintech roles at Monzo or Revolut, deep knowledge of security, encryption, and compliance is essential. React Native experience opens doors at startups; Swift/Kotlin depth is valued at enterprise-scale companies like HSBC or Amazon.