Work with Kotlinexperts trusted by the world's top tech teams.
Work with Kotlin experts trusted by the world's top tech teams. We've delivered Kotlin projects for startups to Fortune 500s. Work with vetted nearshore Kotlin developers. Kick off projects in 2 weeks.
Kotlin
AI Coding tools we use
Custom Kotlin development services
You've probably used products built by our Kotlin developers.
As a Kotlin app development company, we've been building Kotlin-based solutions for over a decade. Our Kotlin development team delivers scalable Android apps, JVM backends, and cross-platform app development.
Android App Development
We build native Android apps in Kotlin with the Android SDK and Android Studio. Our teams design for offline use, secure authentication, and complex data handling.
Our apps scale smoothly and work reliably across devices. Updates roll out without downtime, which helps reduce support issues and keep users engaged.
Enterprise Backend Development
Many enterprises are still running on backends that weren't designed for today's concurrency or observability needs. We deliver Kotlin backends that address these challenges up front, embedding modern concurrency models, monitoring, and governance into the architecture.
This gives your enterprise a fault-tolerant foundation that scales with demand. It also reduces maintenance costs and provides the visibility you need to manage risk.
Kotlin Multiplatform Applications
Duplicating code across iOS and Android wastes your team's time and budget. We use Kotlin Multiplatform to share business logic in unified modules while keeping fully native frontends. This means we can cut delivery times, maintain feature consistency, and lower long-term costs.
Java-to-Kotlin Migration Services
If legacy Java code is slowing innovation and increasing risk, we can help. Our teams migrate large systems to Kotlin through incremental rewrites, null-safety strategies, and CI validation. This allows you to modernize your stack and maintain runtime stability without halting operations.
Kotlin Microservices
Ship features faster while modernizing systems without big, risky rewrites. We build Kotlin microservices that reduce boilerplate, simplify async programming, and make services easier to maintain. Working on containerized, API-first, or event-driven systems? Our Kotlin experts help you release cycles and create services that scale predictably without performance bottlenecks.
Event-Driven Systems in Kotlin
We engineer event pipelines in Kotlin with backpressure handling, ordered processing, and fault recovery using Kafka or cloud-native streaming. You move faster with predictable throughput and reliable data flows.
Cloud-Native and Serverless Kotlin Applications
Elastic systems reduce both your cost and risk. We create cloud-native Kotlin applications and serverless workloads on AWS, Azure, and Google Cloud. Our solutions let you scale systems on demand, minimize operational effort, and get software that adapts to shifting business requirements.
Kotlin Application Support and Maintenance
We provide long-term support and maintenance for Kotlin applications under clear SLAs, including proactive patching, performance monitoring, and feature updates. You keep critical systems secure and aligned with evolving business priorities.
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Our Kotlin development team
Backed by 4000+ devs
Why tech leaders choose our Kotlin teams:
Our expert Kotlin developers have a track record of excellence, and we have the case studies to prove it. Our engineers integrate directly with your in-house teams, follow your workflows, and consistently deliver high-quality software.
We staff every project with top 1% senior engineers (selected out of over 2 million yearly applicants). With 8–10+ years of JVM and Kotlin experience, they have the technical depth to deliver across Android, backend, and multiplatform initiatives. That means faster launches and reliable, production-ready apps.
We've delivered 1,250+ projects for Fortune 500 enterprises to fast-growing startups. That includes large-scale Java-to-Kotlin migrations and enterprise-grade Kotlin backends supporting millions of daily users. Our track record gives you the stability to scale and the capacity to deliver new features faster.
We provide non-billable delivery managers who keep your Kotlin team aligned with business priorities and accountable for outcomes. They manage risks, dependencies, and blockers before they slow you down. So your in-house leaders don't have to. Our model gives you predictable delivery, continuous progress, and fewer surprises in production—without the need for constant oversight.
Kotlin case studies
Dozens of Kotlin projects delivered.
Our track record means you get software that meets the highest technical and business standards.
HUMAN RESOURCES
Scaled an HR Platform with Microservices
Limeade needed to scale its mobile-first employee well-being platform, Limeade ONE, as demand grew. Our senior Kotlin developers migrated the legacy system to a modern microservices architecture, delivering a foundation built for scale and resilience. The team also added analytics dashboards in Tableau and performed targeted QA to improve app quality. The platform now supports millions of users and aligns with Limeade's long-term business objectives for sustainable growth.
Kotlin
Swift
Tableau
iOS
React
Azure
E-COMMERCE & RETAIL
Added Auto-translation and Accessibility Features to Global Marketplace Platform
A global online marketplace needed stronger accessibility and translation support for international users. Our full-stack team implemented auto-translation for product listings and fixed critical display issues. We also expanded automated test coverage and added authenticity checks for product uploads, improving app quality and maintaining reliability for a global customer base.
Kotlin
Node.js
MongoDB
JavaScript
INDUSTRIAL ENGINEERING & MANUFACTURING
Built a BLE Driver for Drone Control
A drone technology provider needed reliable communication between its FTAviator controller and Parrot drones. Our engineers built a custom Bluetooth Low Energy (BLE) driver and optimized packet sizes and transmission intervals for real-time responsiveness. We also integrated the driver with the Android app and performed field testing on drone flights to validate real-world performance.
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.
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:
As a top Kotlin development company, we rely on a proven toolchain built for performance, security, and long-term maintainability.
We use modern frameworks and libraries that support clean architecture, enterprise delivery, and multiplatform scalability.
Spring BootKtorMicronautKotlin Multiplatform MobileJetpack ComposeArrowCoroutinesFlow
We design Kotlin services and APIs as resilient, observable, and secure contracts. Every service is versioned, instrumented, and integrated seamlessly with your systems.
OpenAPIGraphQLRetrofitgRPCKtor Client
We integrate enterprise-grade data engines and caching layers that deliver high availability, strong security, and performance at scale.
PostgreSQLMySQLMongoDBRedisMemcachedElasticsearch
We apply multi-layered testing and static analysis to maintain velocity while preventing regressions and strengthening app quality.
JUnitKotestMockKTestcontainersJaCoCoDetekt
We build security into every layer of the system, applying least-privilege access, policy enforcement, and continuous scanning.
Spring SecurityOAuth 2.0JWTOPA (Open Policy Agent)OWASP Dependency-CheckHashiCorp Vault
We codify environments as infrastructure, automate delivery pipelines, and use rollout patterns that reduce release risk.
What tech leaders ask about Kotlin before pulling us in:
We typically staff Kotlin projects in 2–4 weeks. Our expert Kotlin developers arrive fully equipped and ready to work, with access, credentials, and environments provisioned in advance to support Android, backend, and cross-platform development.
Yes. We hire less than 1% of 2.2M+ applicants each year, so every engineer you work with is senior-level. They average 8–10 years of JVM and Kotlin experience and are ready to handle Android apps, backends, and multiplatform builds.
Yes. We use Kotlin Multiplatform to share business logic across Android, iOS, web, and desktop platforms. This reduces duplication, accelerates feature delivery, and keeps experiences consistent across other platforms.
We migrate large Java systems through incremental rewrites, null-safety strategies, and CI-driven validation. Our approach preserves stability while giving you a modern, maintainable Kotlin-based app with access to new features.
We embed automated testing, static analysis, and peer review into every Kotlin project. Tools like JUnit, Kotest, and Testcontainers provide multi-layered quality gates that reduce production defects and prevent app crashes.
We build security and compliance directly into our delivery pipelines. Our teams use policy-as-code tools, encrypted secrets management, and continuous vulnerability scanning to protect data and infrastructure. We maintain audit trails and align with HIPAA, SOC 2, and GDPR requirements so you meet regulatory standards.
We assign a non-billable delivery manager to keep your Kotlin team focused on the roadmap and accountable for results. They step in early to handle risks, dependencies, and blockers, so work keeps moving without constant oversight. Plus, our U.S. time zone alignment makes day-to-day collaboration simple. And our engineers stay an average of 2+ years, so you get stability as well as speed. With 4,000+ senior engineers on staff, we also have the bench strength to adjust teams as your needs evolve.
Yes. Our 4,000+ bilingual engineers work U.S. hours and embed directly into your standups, sprint planning, and daily communication channels. You get seamless day-to-day collaboration with no delays or time zone barriers.
Yes. We've completed projects for nearly 1500 clients to date, including many Fortune 500 and other enterprise companies. Our engineers have delivered Android apps, JVM backends, event-driven systems, and custom Kotlin solutions across industries. That track record means we can handle enterprise demands for security, compliance, and scale with predictable delivery.
Yes. We offer ongoing support under clear SLAs, covering patching, monitoring, and feature enhancements. This ensures your Kotlin systems remain secure, stable, and aligned with evolving needs.
