KOTLIN DEVELOPMENT SERVICES
Work with Kotlin experts trusted by the world's top tech teams.
Our Kotlin specialists have engineered mission-critical Android applications and robust JVM backends for global enterprises. Work with vetted nearshore architects specializing in Jetpack Compose, Kotlin Multiplatform (KMP), and high-throughput Coroutines.
AI CODING TOOLS WE USE
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Kotlin project.
ENDORSED BY ENGINEERS. TRUSTED BY CTOS.
CUSTOM KOTLIN SERVICES
Advanced Mobile & JVM Engineering
We architect systems that push the boundaries of modern Kotlin. From rendering 60FPS native mobile interfaces with Jetpack Compose to building asynchronous microservices with Ktor, our engineers deliver highly performant, type-safe solutions.
We build pixel-perfect native Android applications. We entirely bypass legacy XML layouts by utilizing Jetpack Compose, crafting reactive, state-driven UI architectures that are drastically easier to test and maintain.
We maximize code reuse without sacrificing native performance. We architect shared business logic, networking, and data layers in KMP, allowing your iOS (Swift) and Android teams to utilize a single, unified backend-driven state.
We prevent Thread exhaustion and UI freezing. Our engineers are experts in Kotlin Coroutines and Flow, architecting highly concurrent, non-blocking asynchronous data pipelines that consume minimal memory.
We build lightweight, ultra-fast microservices. Utilizing JetBrains' native Ktor framework, we develop highly asynchronous, low-latency APIs and WebSockets perfectly tailored for modern cloud-native environments.
We bring modern syntax to enterprise backends. We integrate Kotlin seamlessly into the massive Spring Boot ecosystem, leveraging null safety, data classes, and extension functions to drastically reduce boilerplate code.
We safely modernize your aging codebases. Taking advantage of Kotlin's 100% interoperability with Java, we incrementally refactor monolithic Java 8 architectures into concise, null-safe Kotlin without halting feature development.
We utilize Kotlin's advanced language features (like trailing lambdas and receiver functions) to build custom, strictly-typed DSLs. This allows your team to write configuration and business rules in a highly readable, declarative syntax.
We guarantee absolute code reliability. We implement rigorous testing pyramids utilizing specialized Kotlin testing frameworks like Kotest and MockK, ensuring robust validation of Coroutines and complex reactive flows.
Their engineers perform at very high standards. We've had a strong relationship for almost 3 years.”
The best partnerships are the ones you don't have to worry about. We deliver the kind of technical execution and reliability that builds long-term trust. It's why clients consistently praise our work quality and performance.
OUR KOTLIN DEVELOPMENT TEAM
Why tech leaders choose our Kotlin engineers:
We provide seasoned architects who deeply understand the underlying JVM and Android Runtime (ART). Our teams don't just write syntax; they engineer memory-safe, highly optimized software architectures designed for absolute stability.
Kotlin CASE STUDIES
Numbers of Kotlin projects delivered.
Our clients rely on us for Kotlin software that satisfies strict performance, security, and compliance targets. From high-volume payment gateways to HIPAA-aligned healthcare services, our Kotlin applications stay in production years after launch.
Secure Mobile Banking App
KMP Shared Business Logic
High-Throughput Routing API
Looking for a team with this kind of
track record?
Tell us more about your Kotlin needs.
AI EXPERTS
Work with AI-augmented Kotlin developers.
Every developer we provide uses modern AI coding tools to ship faster than ever while producing cleaner, more consistent code.
TOOLS FOR KOTLIN DEVELOPMENT
The ecosystem we use for Kotlin projects:
We deliver Kotlin solutions on a highly disciplined ecosystem designed for scale. Dependencies are strictly version-locked, null-safety is rigorously enforced, and build pipelines are optimized to compile native targets rapidly.
We build upon mature JVM and Android frameworks to guarantee rapid development, type safety, and seamless asynchronous operations.
We manage complex background tasks and real-time data streams utilizing Kotlin's native, lightweight concurrency primitives.
We utilize modern Android UI toolkits and architectural patterns to craft highly responsive, accessible, and maintainable mobile applications.
We enforce rigorous testing pyramids, utilizing specialized mocking frameworks designed specifically for Kotlin's unique language features.
We maintain pristine codebases by enforcing strict style guidelines and automatically analyzing code for complex architectural smells.
We fully automate your delivery pipelines, handling complex tasks like App Store signing, ProGuard obfuscation, and backend deployments.
We manage complex relational schemas utilizing advanced ORMs tailored for the JVM, or lightweight SQL generators for multiplatform shared code.
We leverage robust build systems tailored for the JVM ecosystem, utilizing advanced caching to drastically reduce compile times.
We build upon mature JVM and Android frameworks to guarantee rapid development, type safety, and seamless asynchronous operations.
CLIENT TESTIMONIALS
Get Kotlin results you can stand behind.
Our work holds up in reviews, in production, and in front of the board.
Digital Commerce
Developed BitForge's Modern Digital Commerce Platform
"Finding engineers who could quickly understand our product vision and execute at a high level was our biggest challenge. Agency consistently provided outstanding developers who became trusted contributors, helping us build BitForge into a reliable and scalable digital marketplace."
Digital Commerce
Developed BitForge's Modern Digital Commerce Platform
BitForge was created to provide a secure digital marketplace for buying and selling software products, digital assets, and downloadable content. Our engineers developed a scalable full-stack platform featuring secure authentication, role-based access control, payment processing, cloud storage integration, and an optimized user experience that supports reliable transactions and future platform growth.
HEALTHCARE
Healthcare & MedTech
"What stands out most about Agency is the quality of its people. They consistently provide talented, experienced developers who quickly become trusted members of our team, helping us deliver reliable software on time and at a high standard."
Networking
Developed new Communication Platform
"Agency helped us transform an ambitious idea into a successful product. Their ability to rapidly source experienced developers and seamlessly integrate them into our team allowed us to accelerate development without compromising on quality."
Networking
Developed new Communication Platform
A growing business needed a modern communication platform to connect teams and customers more efficiently. Our engineers designed scalable backend services, built real-time messaging capabilities, integrated secure APIs, and optimized the user experience to support rapid growth, high availability, and seamless collaboration.
Platform as a Service(Paas)
Scaled and Maintained Deployra's AWS Infrastructure
"Agency has been an outstanding technology partner throughout our growth. Their engineers consistently delivered high-quality solutions, adapted quickly to evolving requirements, and helped us build a reliable deployment platform we're confident will scale with our business for years to come."
Join 50+ companies who count on our Kotlin developers
FLEXIBLE ENGAGEMENT MODELS
Need extra Kotlin expertise?
Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs.
STAFF AUGMENTATION
Extend Your Engineering Team with Senior Talent
Quickly scale your development capacity with experienced software engineers who integrate seamlessly into your existing team. They work within your processes, collaborate in your daily ceremonies, and deliver production-ready code from day one.
DEDICATED TEAMS
Need a dedicated team to deliver products faster?
Build a cross-functional engineering team tailored to your product goals. We assemble developers, designers, QA engineers, and project managers who take ownership of delivery, collaborate closely with your stakeholders, and drive projects from planning through production.
SOFTWARE OUTSOURCING
Need an experienced team to own your entire project?
Entrust your complete software development lifecycle to our experienced engineering teams. From discovery and architecture to development, testing, deployment, and ongoing support, we take full ownership while keeping you informed through every milestone.
Extend Your Engineering Team with Senior Talent
STAFF AUGMENTATION
Quickly scale your development capacity with experienced software engineers who integrate seamlessly into your existing team. They work within your processes, collaborate in your daily ceremonies, and deliver production-ready code from day one.
Need a dedicated team to deliver products faster?
DEDICATED TEAMS
Build a cross-functional engineering team tailored to your product goals. We assemble developers, designers, QA engineers, and project managers who take ownership of delivery, collaborate closely with your stakeholders, and drive projects from planning through production.
Need an experienced team to own your entire project?
SOFTWARE OUTSOURCING
Entrust your complete software development lifecycle to our experienced engineering teams. From discovery and architecture to development, testing, deployment, and ongoing support, we take full ownership while keeping you informed through every milestone.
Kick off Kotlin projects in 2 - 4 weeks.
We have reps
across the US.
Speak with a client engagement specialist near you.
Discuss solutions and decide team structure.
Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.
Onboard your team and get to work.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
We track performance on an ongoing basis.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Kotlin FAQ
What tech leaders ask about Kotlin before pulling us in:
Kotlin is fully interoperable with Java, meaning you don't have to throw away legacy code. However, Kotlin drastically reduces boilerplate, introduces mandatory null-safety (eliminating the dreaded NullPointerException), and provides Coroutines for vastly superior asynchronous programming. Google officially declared Android 'Kotlin-first' years ago, and Spring Boot has fully embraced it for the backend.
Traditional OS threads are 'heavy' and consume significant memory; launching thousands of them will crash an application. Coroutines are 'lightweight threads' managed by the Kotlin runtime. You can launch 100,000 Coroutines concurrently without exhausting memory. They allow our engineers to write highly complex, non-blocking asynchronous code (like network calls) sequentially, making it incredibly easy to read and maintain.
Flutter renders its own UI canvas using Dart, completely bypassing native iOS/Android UI components. Kotlin Multiplatform (KMP) takes a different approach. We use KMP to write the 'business logic' (networking, databases, view models) once in Kotlin. We then write the UI natively in Swift (iOS) and Kotlin (Android). This gives you the massive cost savings of a shared codebase, but with 100% true native performance and look-and-feel.
Jetpack Compose is Android's modern, declarative UI toolkit. Historically, Android UI was built using verbose, brittle XML files. Compose allows our engineers to write the UI directly in Kotlin. It automatically updates the screen when the underlying data state changes, drastically reducing UI bugs, increasing development speed, and making complex animations significantly easier to implement.
Yes, seamlessly. Because Kotlin compiles to JVM bytecode, you can have Java and Kotlin files sitting side-by-side in the same project. We take an incremental approach—leaving legacy Java code untouched while writing all new features in Kotlin, slowly migrating the older files over time without disrupting your deployment schedule.
Ktor is a lightweight, highly asynchronous web framework built from the ground up by JetBrains (the creators of Kotlin). Unlike heavy enterprise frameworks, Ktor utilizes Kotlin Coroutines natively. This makes it the absolute best choice for building ultra-low latency, highly concurrent microservices and WebSockets where minimal memory footprint is critical.
While RxJava/RxKotlin were historically popular, we predominantly use Kotlin Flow and StateFlow. Flow is built directly on top of Coroutines, meaning it is completely native to the Kotlin language. It provides all the power of reactive data streams (mapping, filtering, combining) but with a much shallower learning curve and significantly less memory overhead than RxJava.
Not at all. While it is the undisputed king of Android, Kotlin is a first-class citizen on the backend. Major frameworks like Spring Boot provide dedicated Kotlin DSLs and extensions. Furthermore, with Kotlin/Native and Kotlin/JS, it can be compiled to run on iOS, Windows, Linux, and even inside the web browser.
