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.
4.9/5
60 client reviews
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.
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.
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.
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.
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.
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.
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.
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.
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.
Their engineers perform at very high standards. We've had a strong relationship for almost 7 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.
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.
Speak With Our Team
Top 1% Senior Kotlin Talent
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.
Proven Success Migrating and Scaling
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.
Managed Delivery
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.
Dozens of Kotlin projects delivered.
Our track record means you get software that meets the highest technical and business standards.
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.
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.
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.
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.
Core Frameworks and Libraries
We use modern frameworks and libraries that support clean architecture, enterprise delivery, and multiplatform scalability.
API and Service Layer
We design Kotlin services and APIs as resilient, observable, and secure contracts. Every service is versioned, instrumented, and integrated seamlessly with your systems.
Data Stores, Search, and Caching
We integrate enterprise-grade data engines and caching layers that deliver high availability, strong security, and performance at scale.
Testing and Quality
We apply multi-layered testing and static analysis to maintain velocity while preventing regressions and strengthening app quality.
Security and Identity
We build security into every layer of the system, applying least-privilege access, policy enforcement, and continuous scanning.
DevOps and CI/CD
We codify environments as infrastructure, automate delivery pipelines, and use rollout patterns that reduce release risk.
Observability and Performance
We embed observability from the start so performance is tracked and improved with real data across distributed Kotlin systems.
Build, Dependency, and Code Generation
We enforce clean builds and reliable dependency management to keep delivery predictable and codebases maintainable.
Content and Commerce Platforms
We extend Kotlin applications with integrations into leading content and commerce platforms to support enterprise-scale experiences.
We use modern frameworks and libraries that support clean architecture, enterprise delivery, and multiplatform scalability.
Get Kotlin results you can stand behind.
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
Get senior, production-ready developers who integrate directly into your internal team. They work your hours, join your standups, and follow your workflows—just like any full-time engineer.
Dedicated teams
Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.
Software outsourcing
Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.
Kick off Kotlin projects in 2-4 weeks.
We have reps across the US.
Speak with a client engagement specialist near you.
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.
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 continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Global companies have trusted us to build and scale Kotlin solutions for over a decade.
Excellence.
Our minimum bar for client delivery.
Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.
What tech leaders ask about Kotlin before pulling us in:
How quickly can you start a Kotlin project with us?
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.
Are your Kotlin developers senior-level?
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.
Do you cover cross-platform app development with Kotlin?
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.
How do you handle Java-to-Kotlin migrations?
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.
How do you guarantee code quality and prevent regressions?
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.
How do you handle compliance and security?
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.
How do you keep Kotlin projects on track long-term?
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.
Do your teams work in real time with our US-based team?
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.
Have you delivered at enterprise scale?
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.
Do you provide long-term support for Kotlin applications?
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.
