We've shipped native Android applications and KMM products for clients in the US, UK, and Ireland, real-time mobile platforms, hardware-integrated field apps, and Play Store applications handling hundreds of thousands of active users.
Start within days, senior Kotlin engineers with Android, KMM, and Jetpack Compose production experience.
Quality signal built in, Jetpack Compose, MVVM, coroutines, and Play Store compliance on every build.
Transparent weekly reporting so you see working screens, not progress slides.
Recognition
Struggling to find Kotlin engineers who have actually shipped production Android apps, not just tutorials?
Burned by cross-platform developers who hit Bluetooth, NFC, or background-processing limits they couldn't solve?
Need a team that handles Play Store compliance and architecture, not just app scaffolding?
In short
RaftLabs provides Kotlin developers who have shipped native Android applications, Kotlin Multiplatform Mobile products, and Ktor backend services for clients in the US, UK, Ireland, and Australia. Engagements run part-time, full-time, or as a dedicated team. Developers start within 1-2 weeks at USD 2,400/month.
Hiring a Kotlin developer is easy. Finding one who understands Android architecture, handles platform-specific constraints, and ships a product that performs under real user load is a different problem.
We have been building native Android applications and Kotlin Multiplatform Mobile products since Kotlin became the official Android language. In that time, we have delivered field applications with NFC and Bluetooth integrations, real-time platforms used across 70+ countries, and enterprise Android tools for clients in the US, UK, Ireland, and Australia. These are live applications with paying users, not portfolio demos.
If you need an engineer who has debugged Doze mode issues, tuned RecyclerView performance, navigated Google Play policy changes, and decomposed a legacy Java codebase into clean Kotlin architecture, that is the work we do.
We work with product teams that need native Android development or shared Kotlin logic across platforms.
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 cannot meet the requirement.
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 field apps, MDM-enrolled device applications, barcode scanning, NFC integration, and custom hardware interfaces, use cases that require deep Android platform access.
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.
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.
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.
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.
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.
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.
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.
Native Android and KMM engineers, flexible engagement, full source code ownership.
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 are part of every build.
Part-time for a specific feature or Android screen, full-time for a complete app build, or a dedicated team for a complex multi-platform product. Match the engagement to your current phase.
Senior Kotlin talent without the cost of local senior Android engineers. Fixed monthly rates from USD 2,400/month, no recruitment timeline, no benefits overhead, no notice period.
Daily standups, sprint reviews, and weekly summaries. You see working screens and features, not progress slides. Work tracked in Asana, communication on Slack.
Google Play policy compliance is built into our development process, target SDK requirements, privacy policy declarations, permissions justification, and Play Store listing optimisation.
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.
| RaftLabs | In-House | Freelance | |
|---|---|---|---|
| Time to hire top Kotlin developers | 1 day to 2 weeks | 4 to 6 weeks | 1 to 12 weeks |
| Project initiation time | 1 day to 2 weeks | 2 to 10 weeks | 1 to 10 weeks |
| Risk of project failure | Exceptionally low with a 98% success rate | Low | Very High |
| Developers supported by project management | Yes, dedicated PM and Agile processes | Varies | No |
| Exclusive development team | Yes, dedicated team guaranteed | Yes | No |
| Assurance of work quality | Yes, with quality assurance processes | Yes | Varies |
| Advanced development tools and workspace | Yes, enterprise-grade tools | Yes | Varies |
Tell us your Android requirements, the features, the integrations, and the platforms you need to support. Fill out the contact form and we will respond within one business day.
A 30-minute call to understand your product requirements, existing codebase (if any), and what the Kotlin engineers need to deliver. No sales pitch, an honest conversation about fit.
A clear proposal with team composition, timeline, and fixed or retainer cost. Concrete numbers you can plan around, not vague estimates.
Engineers onboard in days. First sprint planned. First working screen delivered within two weeks of kickoff.
Pricing
Dedicated senior engineers from $6,000/month (minimum pod $12,000/month).
Senior Kotlin engineers available in days. Fixed cost or monthly retainer. Full source code ownership.
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 is a good fit when you have significant business logic that should not be duplicated, want native UI on both platforms, and have a team comfortable with Kotlin. It is 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.
Part-time from USD 2,400/month (80 hrs). Full-time from USD 4,800/month (160 hrs). Dedicated teams from USD 15,000/month. Project work from USD 10,000 for MVP scope. Contact us for a tailored quote based on your specific requirements.
Most engagements start within 1-2 weeks of signing. We have developers available on short notice for urgent projects. The discovery call and proposal typically happen within 2-3 business days of your initial contact.
Yes. We sign NDAs as standard practice for all client engagements. Contact us to get the process started.
Slack for daily communication, Asana for project tracking. You will have direct access to your developer and a dedicated project coordinator throughout the engagement. Daily standups or weekly syncs are available depending on your preference.
Our Kotlin engineers have built production UIs with Jetpack Compose, custom theming, complex animations, responsive layouts, and migration from XML-based layouts. We apply Compose on new builds and can scope and execute a phased XML-to-Compose migration for existing apps without disrupting ongoing feature development.
Yes. Our developers integrate into existing Android projects regularly, whether that means adding Jetpack Compose to an XML-layout codebase, introducing coroutines to a callback-heavy project, or extending a Java application with new Kotlin modules. We adapt to your codebase rather than asking you to rewrite from scratch.