Kotlin Development Services
- 10+ Android apps
- 6+ Kotlin engineers
- 6+ years with Kotlin
What we build with Kotlin Development
FinTech and mobile banking apps
Secure Android banking apps with biometric authentication, real-time transaction feeds, Google Pay integration, PCI DSS-compliant card tokenization and encrypted local storage with Jetpack Security.
E-commerce mobile platforms
Product catalogs with offline browsing via Room database, cart persistence, Google Pay and payment gateway integration, barcode/QR scanning with CameraX and personalized push notifications via FCM.
Social networking apps
Feed-based social apps with Jetpack Compose animations, real-time messaging via WebSocket, camera integration with CameraX, push notifications, deep linking and media upload with background WorkManager tasks.
Kotlin Multiplatform (KMP) projects
Shared business logic between Android and iOS - networking (Ktor), local storage (SQLDelight), serialization (kotlinx.serialization) and state management compiled to JVM and native iOS frameworks.
Backend microservices
High-performance server applications with Spring Boot or Ktor, coroutine-based non-blocking I/O, Exposed ORM for database access, gRPC services and Kubernetes-ready containerized deployments.
Java-to-Kotlin migration
Incremental migration of legacy Java Android apps and Spring Boot backends to Kotlin - converting file by file with full interoperability, adding null safety and replacing Java boilerplate with Kotlin idioms.
What is Kotlin development?
Kotlin vs Java for Android and backend
| Factor | Kotlin | Java |
|---|---|---|
| Null safety | Built into the type system - nullable types require explicit handling | Optional class added in Java 8, not enforced by compiler |
| Concurrency | Coroutines - structured, lightweight, suspend functions | Virtual threads (Java 21+), CompletableFuture, verbose callback patterns |
| Boilerplate | Data classes, extension functions, default parameters | 15-30% more code for same functionality (getters, setters, builders) |
| Android support | Google-preferred, Jetpack Compose, first-class tooling | Legacy support, XML layouts, declining new API coverage |
| Multiplatform | KMP shares code across Android, iOS, web, desktop | JVM only - no native iOS compilation |
| Interoperability | 100% Java interop - call Java from Kotlin and vice versa | Can call Kotlin code but misses Kotlin-specific features |
| Enterprise backend | Spring Boot, Ktor, Micronaut - full production support | Spring Boot, Jakarta EE, Quarkus - largest enterprise ecosystem |
Pharos Production recommends Kotlin for all new Android projects and Spring Boot backends where team productivity matters. Java remains relevant for large enterprise codebases with existing Java teams and strict corporate standards. For greenfield projects, Kotlin reduces development time by 20-30% while maintaining full Java ecosystem access.
Limitations: Kotlin compilation is 15-25% slower than Java on large projects due to additional compiler passes for null safety and type inference. Kotlin Multiplatform (KMP) is production-ready for business logic sharing but its iOS ecosystem tooling (Xcode integration, debugging) is less mature than native Swift development. Kotlin coroutines require understanding of structured concurrency, dispatchers and scope management - misuse leads to subtle bugs including leaked coroutines and cancelled jobs. The Kotlin developer pool, while growing fast, is still smaller than Java.
Kotlin Development Benchmark 2026
Proprietary research based on 30+ Kotlin projects delivered by Pharos Production between 2018 and 2026. Dataset covers Android consumer apps, FinTech mobile clients, KMP cross-platform projects and Spring Boot backends. Methodology (Pharos Verified Delivery): aggregated delivery metrics with Google Play Console performance monitoring and crash rate tracking. Full report available on request.
Kotlin Development projects we delivered
- Kotlin compilation is 15-25% slower than Java on large projects - incremental compilation mitigates this but clean builds on CI remain noticeably slower, increasing pipeline costs.
- Kotlin Multiplatform iOS tooling is less mature than native Swift - Xcode debugging of KMP code is limited, iOS-specific crash reports are harder to trace back to shared Kotlin code and Swift interop requires @ObjCName annotations for clean APIs.
- Kotlin coroutines have a steep learning curve for developers coming from Java threads - structured concurrency, scope management, dispatcher selection and cancellation propagation introduce subtle bugs when misunderstood.
- The Kotlin developer pool, while growing rapidly, is still smaller than Java - finding senior Kotlin engineers with KMP experience remains challenging and commands premium rates in most markets.
- Kotlin is used by 95%+ of the top 1,000 Android apps and is Google's preferred language for Android development since 2019.
- Kotlin Multiplatform (KMP) enables sharing 50-70% of business logic between Android and iOS, reducing total cross-platform development cost by 30-40%.
- Kotlin null safety eliminates NullPointerException - the single most common crash reason in Java Android apps - at compile time rather than runtime.
- Pharos Production has delivered 30+ Kotlin projects across FinTech, e-commerce and social networking since 2018.
- A Kotlin Android MVP typically takes 8-12 weeks and starts from $30,000 depending on complexity, backend integration and platform requirements.
Reviews
Independent reviews from Clutch, GoodFirms and Google - verified client feedback on our software projects
Based on 12 verified client reviews
Pharos Production helped us modernize our patient-facing applications while ensuring full compliance with healthcare security and privacy requirements. The new platform increased patient portal adoption from 22% to 68% within six months of launch. The project was delivered on schedule and significantly improved both clinician efficiency and patient engagement.
Frequently asked questions
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Kotlin eliminates null pointer crashes at compile time, reduces boilerplate by 20-30%, provides coroutines for clean async code and is Google’s preferred language with first-class Jetpack Compose support. All new Android APIs and samples are Kotlin-first.
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Yes. Kotlin works with Spring Boot (the most popular Java framework), Ktor (Kotlin-native framework by JetBrains) and Micronaut.
Coroutines provide non-blocking I/O without callback complexity. Many companies run Kotlin backends alongside Kotlin Android apps for full-stack Kotlin.
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We migrate incrementally - converting files one by one using IntelliJ auto-conversion as a starting point, then manually improving null safety, replacing Java patterns with Kotlin idioms and adding coroutines. Full interoperability means the app works throughout the migration.
Typical migration takes 4-12 weeks.
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Android MVPs start from $30,000-$60,000. Full-featured apps with backend, KMP shared logic and payment integrations range from $80,000 to $250,000+.
Java-to-Kotlin migration starts from $15,000-$35,000 depending on codebase size.
Choose your cooperation model
Core software architecture, initial UI/UX, working prototype in 3 months
Software architecture, UI/UX, customized software development, manual and automated testing, cloud deployment
Comprehensive software architecture and documentation, UI/UX design layouts, UI kit, clickable prototypes, cloud deployment, continuous integration, as well as automated monitoring and notifications.
Prices vary based on project scope, complexity, timeline and requirements. Contact us for a personalized estimate.
Or select the appropriate interaction model
Request staff augmentation
Need extra hands on your software project? Our developers can jump in at any stage – from architecture to auditing – and integrate seamlessly with your team to fill any technical gaps.
Hire dedicated experts
Whether you’re building from scratch or scaling fast, our engineers are ready to step in. You stay in control, and we handle the code.
Outsource your project
From first line to final audit, we handle the entire development process. We will deliver secure, production-ready software, while you can focus on your business.
| Model | Best for | Team setup | Budget range |
|---|---|---|---|
| Staff Augmentation | Existing teams needing extra engineers at any project stage | 1-2 weeks | From $5,000/month |
| Dedicated Team Popular | Long-term projects requiring full ownership and control | 2-4 weeks | From $15,000/month |
| Project Outsourcing | Full-cycle development from idea to production launch | 1-2 weeks | $10,000-$80,000+ |
Partnerships & Awards
Recognized on Clutch, GoodFirms and The Manifest for software engineering excellence
Build with Kotlin Development
90+ engineers ready to deliver your Kotlin Development project on time and within budget
What happens next?
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Contact us
Contact us today to discuss your project. We’re ready to review your request promptly and guide you on the best next steps for collaboration
Same day -
NDA
We’re committed to keeping your information confidential, so we’ll sign a Non-Disclosure Agreement
1 day -
Plan the Goals
After we chat about your goals and needs, we’ll craft a comprehensive proposal detailing the project scope, team, timeline and budget
3-5 days -
Finalize the Details
Let’s connect on Google Meet to go through the proposal and confirm all the details together!
1-2 days -
Sign the Contract
As soon as the contract is signed, our dedicated team will jump into action on your project!
Same day
Our offices
Headquarters in Las Vegas, Nevada. Engineering office in Kyiv, Ukraine.