Hire Dedicated Kotlin Developers
Our Kotlin developers are architects of modern, reliable, and scalable applications, use Kotlin to build high-performance systems for Android, backend, and multiplatform environments.
- Top 1% Vetted Kotlin Developers
- Aligned with Your Time Zone & Workflow
- Interview Developers Before Committing
- Flexible Contracts & Transparent Pricing
Trusted by Leading
Industry Clients Globally
Join our esteemed clients who rely on innovative technology solutions to drive their success and growth.
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Trusted by Leading
Industry Clients Globally
Join our esteemed clients who rely on innovative technology solutions to drive their success and growth.
Hire Kotlin Developers for Their Specialized Expertise
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Native Android App Development
We build exceptional, high-performance Android applications using a modern stack centered on Kotlin and Jetpack Compose. Our process emphasizes clean architecture and the use of Coroutines and Flow for smooth, responsive user interfaces. By leveraging Kotlin's conciseness and null safety, we eliminate common bugs like NullPointerExceptions, creating robust apps that are a pleasure for users to interact with and for your team to maintain.
High-Performance Backend Systems
Our developers create scalable and resilient backend systems using Kotlin with battle-tested frameworks like Spring Boot and Ktor. We harness the power of structured concurrency with Coroutines to build non-blocking APIs that handle high traffic with maximum efficiency. This results in fast, resource-efficient microservices and monolithic applications that provide a solid foundation for your business operations.
Kotlin Multiplatform (KMP)
Our team excels at building shared logic for iOS, Android, Desktop, and Web with Kotlin Multiplatform. This approach allows you to write your business logic, data handling, and API communication code once and deploy it natively on every platform. The outcome is faster development cycles, consistent behavior across all devices, and a significant reduction in code duplication, saving your company time and resources.
Legacy System Modernization (Java to Kotlin)
We specialize in migrating existing Java codebases to modern, idiomatic Kotlin. Leveraging Kotlin's 100% interoperability with Java, we execute seamless, incremental migrations that improve code safety, readability, and developer productivity without requiring a full rewrite. We help you modernize your legacy systems, reduce boilerplate, and introduce modern language features that make your codebase more resilient and future-proof.
Cloud-Native and Microservices Architecture
We architect and build scalable cloud-native applications designed for modern infrastructure. Our expertise with Kotlin, Docker, and Kubernetes allows us to create lightweight, containerized microservices that are easy to deploy, manage, and scale. We design systems that are optimized for performance and resilience in the cloud, ensuring your application can grow with your user base.
Why Hire Kotlin Developers from Entrans
1. Expertise in Kotlin and its Ecosystem
Our developers are proficient in the entire Kotlin stack, including Coroutines, Flow, Jetpack for Android, and backend frameworks like Spring Boot and Ktor.
2. Focus on Pragmatic & Maintainable Code
We leverage Kotlin's modern features like null safety, data classes, and type inference to build applications that are clean, concise, and highly maintainable.
3. Mission-Critical System Solutions
Access expert Kotlin developers for your most demanding projects where performance and reliability cannot be compromised.
4. Safety and Concurrency First
Use our deep understanding of Kotlin's core strengths—especially null safety and structured concurrency—to build powerful, error-resistant, and highly responsive software.
5. Experience in Building Scalable Systems
Our team excels at building applications that are not only correct but are also optimized for performance and ready to scale in the cloud.
Our Hiring Models
Dedicated Kotlin Developers
Ideal for long-term, complex projects requiring specialized Kotlin expertise, such as a flagship Android app, a backend migration, or a Kotlin Multiplatform initiative.
Team Augmentation
Integrate our seasoned Kotlin developers into your existing team to accelerate development, introduce modern best practices, or lead a migration from Java.
Project-Based Engagement
Develop specific Kotlin applications, backend microservices, or shared KMP libraries based on well-defined scopes and deliverables.
Tech Stack Used By Our Kotlin Developers
Core Language + Tooling
Backend Frameworks + APIs
Android Development
Kotlin Multiplatform
Cloud & DevOps
Testing and Quality Assurance
Our Development Process
Requirement Analysis
Planning & Design
Development
Testing
Deployment
Maintenance & Support
Latest Trends in Kotlin Development
Kotlin Multiplatform (KMP) Maturity
KMP is rapidly maturing beyond just sharing logic between iOS and Android. There is a major trend in using KMP to share code with web (Kotlin/JS) and desktop (Compose for Desktop), positioning it as a true "write once, run anywhere" solution for business logic, which drastically cuts down on redundant work.
Rise of Ktor for Lightweight Backends
While Spring remains dominant, there is a significant trend towards adopting Ktor for building high-performance, asynchronous microservices. Its lightweight nature, native coroutine support, and simplicity make it the go-to choice for teams wanting a pure-Kotlin, non-blocking backend solution.
Declarative UIs with Compose Multiplatform
The success of Jetpack Compose on Android has sparked a trend of extending its declarative UI paradigm to other platforms. Compose for Desktop is stable, and Compose for iOS and Web are rapidly advancing, promising a future where developers can define their UI once in Kotlin for all targets.
Server-Driven UI (SDUI)
A growing trend involves using a Kotlin backend (often with Ktor) to send UI descriptions to a multiplatform client. This allows companies to update app layouts and user flows instantly without shipping a new app version, enabling rapid experimentation and content delivery.
Continued Migration from Java
The trend of migrating from Java to Kotlin remains strong. Companies are continuously drawn to Kotlin's safety features (especially null safety), conciseness, and modern tooling. This is less about new projects and more about modernizing and future-proofing massive, existing enterprise Java codebases.
Our Success Stories
Modernizing a Retail Giant's Android Application
A leading e-commerce company set out to rebuild its flagship Android app to reduce crashes and improve user engagement.
By migrating to an all-Kotlin, Jetpack Compose architecture, the new app achieved a 90% reduction in crash rates and a 2x increase in developer productivity for new features.
Transforming a FinTech's Backend with Microservices
A major financial services firm needed to break down its monolithic Java backend to improve scalability and development speed.
Entrans led the migration to a Kotlin and Spring Boot microservices architecture, resulting in a 60% improvement in API response times and a 3x faster deployment frequency.
FAQs on Hiring kotlin Developers
A Kotlin developer builds modern, high-performance applications, primarily for Android and server-side systems. Their work includes creating smooth user interfaces with Jetpack Compose, building scalable APIs with Spring Boot or Ktor, and increasingly, writing shared business logic with Kotlin Multiplatform.
They primarily use IntelliJ IDEA or Android Studio and build tools like Gradle or Maven. Key tools include backend frameworks (Spring, Ktor), Android libraries (Jetpack, Coroutines, Retrofit), and testing frameworks (JUnit, MockK). Version control with Git is standard.
For backend, Kotlin code is compiled into a JAR file and run on the Java Virtual Machine (JVM), typically inside a Docker container managed by Kubernetes. Android apps are compiled into an AAB (Android App Bundle) and published to the Google Play Store. Kotlin Multiplatform code is compiled into native libraries for each target platform.
