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I will build native ios and android apps with a shared kotlin core
Josef A
About this gig
I build native iOS and Android apps that share a small Kotlin Multiplatform core: SwiftUI on iOS, Jetpack Compose on Android, and shared logic only where it truly saves time. You get a real native feel on both platforms without writing everything twice.
I am a senior iOS developer with 10+ years of experience. My app Kalorie is built exactly this way: native SwiftUI + native Jetpack Compose, 4 small KMP modules, Firebase backend, unit tests and CI. Both apps are in closed testing. The code is on my GitHub, so you can judge the quality before you hire me.
Good fit for MVPs, adding Android to an existing iOS app (or the reverse) and moving duplicated logic into a shared Kotlin module. Larger, Kalorie-sized projects are quoted individually as custom offers. Please message me before ordering so we can agree on the scope.
What you get:
- Native iOS app in Swift and SwiftUI (my main strength)
- Native Android app in Kotlin and Jetpack Compose
- Shared Kotlin module for business logic, networking or data models, kept small and testable
- Clean MVVM architecture, unit tests and readable code
- Full source code and a short hand-over document
- App Store and Google Play submission help
Get to know Josef A
Josef A
Senior iOS Developer
- FromCzech Republic
- Member sinceOct 2026
Languages
English, Czech
Senior iOS developer with 10+ years of experience building production mobile apps for major banks and fintech companies, including ČSOB and Raiffeisenbank. Strong in Swift, SwiftUI and the Apple ecosystem, expanding into Kotlin Multiplatform. My app Kalorie runs natively on iOS (SwiftUI) and Android (Jetpack Compose) with shared KMP modules, Firebase and CI; the source is on my GitHub. I use AI-assisted development (Claude Code) and deliver in structured, incremental steps. Open to remote contract or full-time work.
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FAQ
Do you work in Android as well as iOS?
iOS is my main strength (10+ years). I also build native Android apps in Kotlin and Jetpack Compose, for example my Kalorie app. For large or Android-heavy projects, please message me first so we can check the fit.
Can you add Android to my existing iOS app?
Yes. Send me a short description or a link to the app and I will tell you what can be shared in a Kotlin module and what should stay native. We agree on the scope before you order.
