Hire a Kotlin Multiplatform developer

Share the logic. Keep the UI native. Stop writing every rule twice.

Kotlin Multiplatform is the pragmatic middle ground: one implementation of your business rules, networking, validation and data models, with a real SwiftUI app on iOS and a real Compose app on Android sitting on top.

I've worked on exactly this setup in production โ€” contributing to the shared KMP layer behind a national carrier's self-care app while owning the iOS side of the same product. I know where the seams are and how to keep the iOS experience from becoming a second-class citizen.

What you get

A shared layer that earns its keep

Models, repositories, API clients and business rules written once. Bug fixed once. Behaviour identical on both platforms by construction.

Native UI, no apologies

SwiftUI on iOS, Compose on Android. Users get platform-correct navigation, gestures and animation.

Migration without a rewrite

KMP can be introduced module by module into apps you already have. I'd rather move one domain across and prove it than pitch a big-bang rewrite.

Two teams, one contract

The shared module becomes the agreement between iOS and Android engineers, which removes a surprising amount of recurring argument.

Tools of the trade

  • Kotlin Multiplatform
  • Kotlin
  • Swift
  • SwiftUI
  • Ktor
  • Coroutines
  • Dependency Injection
  • Gradle
  • CI/CD

Work I've shipped

Virgin Mobile Selfcare

Beyond ONE ยท May 2025 โ€” July 2026

The customer selfcare app for a national mobile carrier, used by hundreds of thousands of people to top up, pay bills and track usage. I own the Top-Up, Payments and Dashboard modules, contribute to the shared Kotlin Multiplatform business layer, and automated the multi-environment release pipeline.

  • Swift
  • SwiftUI
  • Kotlin Multiplatform
  • Fastlane
  • CI/CD

How working together goes

  1. Find the shared core

    We look at your app and identify what is genuinely platform-independent. That's usually more than teams expect.

  2. Pilot one domain

    One feature moves into the shared module and ships to both stores. Real evidence before a wider commitment.

  3. Expand deliberately

    More domains move across as the pattern proves itself, with both native apps staying releasable throughout.

  4. Train the team

    Your iOS and Android engineers end up owning it. That's the point.