• Android app performance or UX not meeting user expectations from cross-platform development?

  • Need Kotlin engineers who understand Android architecture, not just app scaffolding?

Hire Kotlin Developers

Kotlin engineers who build native Android applications and Kotlin Multiplatform Mobile (KMM) products -- for teams that need the performance and platform depth that cross-platform frameworks can't match.

  • Senior Kotlin developers with Android, KMM, and Kotlin backend experience

  • Flexible models -- part-time, full-time, or dedicated team

  • Start in days. Fixed cost or monthly retainer.

Who We Work With

We work with product teams that need native Android development or shared Kotlin logic across platforms.

Android-First Products

Products where Android is the primary or most demanding platform -- hardware integrations, camera features, Bluetooth connectivity, background processing, or performance-critical applications where Flutter or React Native can't meet the requirement.

Kotlin Multiplatform Teams

Teams sharing business logic across Android and iOS via KMM, with native UIs on each platform. The right architecture for products that need platform-native feel with shared core logic.

Enterprise Android Applications

Enterprise field apps, MDM-enrolled device applications, barcode scanning, NFC integration, and custom hardware interfaces -- use cases that require deep Android platform access.

Startups Rebuilding from Cross-Platform

Teams that launched with React Native or Flutter and are hitting performance or platform-specific capability limits. We plan and execute the migration to native Kotlin with minimal feature disruption.

Our Kotlin Development Services

Native Android Development

Android applications built with Kotlin -- Jetpack Compose UI, ViewModel/LiveData, Room database, Retrofit/OkHttp networking, Hilt dependency injection, and coroutines for async work. Clean Architecture or MVVM depending on project complexity.

Kotlin Multiplatform Mobile (KMM)

Shared Kotlin logic for networking, data models, business rules, and caching -- running natively on both Android and iOS. Native Compose Multiplatform UI or platform-native UI on each target. KMM where the code sharing actually delivers value, not as a dogmatic rule.

Jetpack Compose UI Development

Declarative Android UI built with Jetpack Compose -- animations, custom components, theming, and responsive layouts. Migration from XML layouts to Compose for existing applications, or full Compose builds for new products.

Android Performance Optimisation

Profiling and optimising existing Android applications -- startup time, scroll performance, memory usage, battery consumption, and network efficiency. We find the actual bottlenecks and fix them, not just the obvious symptoms.

Kotlin Backend (Ktor)

Backend services built with Ktor for teams that want Kotlin across their full stack. Lightweight, asynchronous, and Kotlin-idiomatic -- a good fit when you want to share Kotlin knowledge between your mobile and backend teams.

Legacy Android Modernisation

Java-to-Kotlin migration for existing Android codebases. Architecture modernisation from legacy patterns to Clean Architecture or MVVM with Jetpack components. We modernise systematically, keeping the app working throughout.

Hire Kotlin developers who build Android apps that perform

Native Android and KMM engineers, flexible engagement, full source code ownership.

What Sets Our Kotlin Developers Apart

Deep Android Platform Knowledge

Our Kotlin engineers understand the Android platform -- not just Kotlin syntax. Activity lifecycle, background processing limits, Doze mode, battery optimisation, hardware APIs, and Google Play policy requirements.

Flexible Engagement

Part-time for a specific feature or Android screen, full-time for a full app build, or a dedicated team for a complex multi-platform product. Match the engagement to your current phase.

Cost-Effective

Senior Kotlin talent without the cost of local senior Android engineers. No recruitment timeline, no benefits overhead, no notice period.

Regular Reporting

Daily standups, sprint reviews, and weekly summaries. You see working screens and features, not progress slides.

Play Store Compliance

Google Play policy compliance is built into our development process -- target SDK requirements, privacy policy declarations, permissions justification, and Play Store listing optimisation.

Testing First

Unit tests for ViewModels and business logic, instrumented tests for UI flows, and Espresso tests for critical user paths. Tests are part of delivery, not an afterthought.

Comparative Analysis of RaftLabs, In-House & Freelancers

RaftLabsIn-HouseFreelance
Time to hire Kotlin developers
Project initiation time
Risk of project failure
Developers supported by project management
Exclusive development team
Assurance of work quality
Advanced development tools and workspace

Kotlin Developer Hiring Costs -- Monthly

Hire Resource (Part-Time)

For specific Android screens, features, or performance work alongside your existing team.

  • 10 work days per month (80 hours)
  • Dedicated project coordinator
  • Senior team member support when required

Starts at USD 2400

Hire Resource (Full-Time)

For sustained delivery on an Android app or KMM product build.

  • 20 work days per month (160 hours)
  • Dedicated project coordinator
  • Full senior team support included

Starts at USD 4800

Dedicated Development Team

A full mobile team for complex Android + iOS KMM product builds.

  • 20 work days per month (160 hours) per resource
  • Dedicated project manager
  • Android, iOS, backend, and design resources available

Starts at USD 15000

Kotlin Development Costs -- Project Basis

Minimum Viable Product

A native Android MVP with core features, backend API integration, and Play Store deployment.

  • Core screens and user flows
  • Authentication and API integration
  • 6--10 week delivery

USD 10,000 -- 25,000

Full-Featured Android App

A production-grade Android application with full feature set, offline capability, and performance optimisation.

  • Full feature set with offline support
  • Performance tuning and Play Store compliance
  • 12--20 week delivery

USD 25,000 -- 70,000

KMM or Enterprise Application

Kotlin Multiplatform Mobile builds or enterprise Android applications with hardware integration or complex compliance requirements.

  • Shared business logic across platforms
  • Hardware integration or MDM requirements
  • Custom scoping required

Get Custom Quote

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Contact Us

Tell us your Android requirements -- the features, the integrations, and the platforms you need to support.

Discovery Call

A 30-minute call to understand your product requirements, existing codebase (if any), and what the Kotlin engineers need to deliver.

Get a Proposal

A clear proposal with team composition, timeline, and fixed or retainer cost.

Project Kickoff

Engineers onboard in days. First sprint planned. First working screen delivered within two weeks.

Hire Kotlin developers who build Android apps that work

Senior Kotlin engineers available in days. Fixed cost or monthly retainer. Full source code ownership.

Frequently Asked Questions

Choose native Kotlin Android when your app requires deep platform integration -- Bluetooth, NFC, camera APIs, custom hardware, MDM enrollment, or background processing that cross-platform frameworks handle poorly. Also choose native when performance is critical and the overhead of a JavaScript bridge or Dart-to-native bridge would be noticeable to users. For most standard CRUD apps with UI-heavy requirements, Flutter or React Native are faster and more cost-effective to build with.

KMM lets you write shared business logic in Kotlin -- networking, data models, validation, caching -- that runs on both Android and iOS, while keeping the UI native on each platform. It's a good fit when you have significant business logic that shouldn't be duplicated, want native UI on both platforms, and have a team comfortable with Kotlin. It's not a silver bullet -- the shared module still needs to be designed carefully, and iOS integration requires bridging code. We assess whether KMM is the right architecture for your specific project.

Yes. Java-to-Kotlin migration is straightforward at the language level -- Kotlin is fully interoperable with Java and Android Studio has automated conversion tools. The harder part is architecture modernisation -- moving from legacy MVP or MVC patterns to MVVM with Jetpack components, introducing coroutines for async work, and replacing older libraries with Jetpack equivalents. We plan migrations in phases that keep the app working throughout.

Yes. We handle the complete Play Store submission process -- signing the release APK or AAB, completing the Play Console store listing, handling content rating questionnaires, and complying with Google Play data safety requirements. We also advise on Play Store optimisation for visibility.