Mobile Development
Hire Kotlin Developers
Kotlin developers build native Android apps, and increasingly share code across platforms with Kotlin Multiplatform or write server-side services.
The role
What Kotlin developers do
On Android, a Kotlin developer builds interfaces with Jetpack Compose, structures the app with ViewModels and dependency injection, and handles background work, notifications and Play Store releases. Kotlin also runs on the JVM, so some developers build backend services with Spring or Ktor.
Typical deliverables
- A native Android app
- Jetpack Compose interfaces
- Offline storage with Room
- Background work and notifications
- Google Play releases
Tools you will see
- Kotlin
- Jetpack Compose
- Coroutines and Flow
- Hilt
- Room
- Android Studio
Choosing
How to choose Kotlin developers
What to look for
- Apps on Google Play they built or substantially worked on.
- Modern Android architecture: Compose, ViewModels, coroutines.
- Testing on a range of screen sizes and Android versions.
- Attention to battery use and background limits.
Questions to ask
- 1How would you structure this app's architecture?
- 2How do you handle Android fragmentation across devices?
- 3Have you worked with Kotlin Multiplatform?
- 4How do you test background work?
Planning
Before you post the job
Android only or shared code
Kotlin Multiplatform can share business logic with iOS while keeping native interfaces. Ask whether it suits your app.
What drives cost
Screens, offline and background features, device support range and backend work.
Hiring on Open Lance
- Posting a job and reviewing proposals are free.
- Each milestone is funded into escrow before work starts and paid when you approve it.
- Hire fixed-price, hourly, as a monthly Dedicated Hire, or buy a packaged Drop-In.
- Client fees are shown before you pay and added on top of the work.
FAQ
Questions about hiring Kotlin developers
Kotlin or Java for Android?
Kotlin is Google's recommended language for Android. Existing Java apps can adopt it gradually.
What is Kotlin Multiplatform?
A way to share code such as networking and business logic between Android, iOS and other platforms.
Can Kotlin be used for a backend?
Yes, with frameworks such as Spring Boot or Ktor on the JVM.
Related
Related skills
Post a job for Kotlin developers
Describe the work and compare proposals. You only fund the first milestone once you have chosen someone.