Kotlin has firmly established itself as a go-to language for building reliable, efficient mobile applications. Many top companies now specialize in Kotlin app development, helping businesses create performant Android apps and multiplatform solutions that stand up to real-world demands in fast-paced industries.
These agencies bring deep expertise in crafting enterprise-grade applications, focusing on clean architecture, seamless integrations, and future-ready codebases. From fintech platforms and trading tools to complex internal systems, they deliver solutions that combine speed, security, and scalability while accelerating time to market.
1. Itexus
Itexus builds applications with Kotlin for Android and multiplatform needs. We focus on clean architecture and reliable performance that fits enterprise environments where integrations and compliance matter. Our approach combines Kotlin features with practical development practices to create solutions that handle real business workflows.
We develop secure applications focused on smooth user experiences and reliable data handling. Modernization services update existing applications while keeping business operations stable. We maintain functionality through ongoing support as requirements evolve.
Key Highlights:
- Android application development
- Multiplatform solutions
- Code maintainability focus
- Integration capabilities
Services:
- Kotlin app development
- Custom mobile applications
- Application modernization
- Secure data handling
Contact Information:
- Website: itexus.com
- Email: [email protected]
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Itransition
Itransition works with Kotlin to create Android applications that feel natural on the device. The company also handles multiplatform projects where one codebase covers Android, iOS, web, and desktop needs. Their developers focus on clean code that stays maintainable over time.
Many projects involve building features like real-time interaction in AR apps or streamlining operations in self-service kiosks. Itransition supports migration from Java setups to Kotlin for better performance. They provide ongoing maintenance after launch and integrate with various backend systems. Staff augmentation options let clients add experienced Kotlin developers to existing teams when deadlines tighten.
Key Highlights:
- Android app development with platform-specific capabilities
- Multiplatform solutions using Kotlin Multiplatform
- Migration from Java to Kotlin
- App maintenance and support
Services:
- Web app development
- Kotlin staff augmentation
- Custom application components
- API integrations
Contact Information:
- Website: www.itransition.com
- Phone: +1 720 207 2820
- Email: [email protected]
- Address: 160 Clairemont Ave, Suite 200, Decatur, GA 30030
- LinkedIn: www.linkedin.com/company/itransition
- Facebook: www.facebook.com/Itransition
- Twitter: x.com/itransition
3. Uptech
Uptech builds Kotlin applications that prioritize performance and security for Android users. The company guides clients through the full process from initial planning to post-launch care. Their approach includes thorough testing with both manual and automated methods to catch issues early.
Engineers at Uptech pay close attention to architecture choices that make apps easier to update later. They work across several sectors including fintech and healthcare where compliance matters. Prototyping sessions help refine ideas before heavy coding begins. The team remains flexible with team size as project needs shift.
Key Highlights:
- Custom Kotlin app development
- App migration from Java
- QA testing for Kotlin projects
- Post-launch maintenance
Services:
- Software consulting
- Mobile development
- Backend connectivity
- Industry-specific solutions
Contact Information:
- Website: uptech.team
- Phone: +1 310 776-93-51
- Email: [email protected]
- LinkedIn: www.linkedin.com/company/uptech-team
- Facebook: www.facebook.com/uptechteam
- Twitter: x.com/uptechteam
- Instagram: www.instagram.com/uptechteam
4. 21century.tech
21century.tech builds custom software solutions for businesses across different sizes. The company works in areas like fintech, healthcare, e-commerce, logistics, and enterprise systems. Developers there create applications using modern approaches that fit specific business processes.
The focus stays on delivering web applications that respond well on various devices along with mobile options for both iOS and Android. 21century.tech also handles cloud migrations and DevOps setups to keep systems running smoothly after launch. AI and machine learning features come into play when clients need automation or analytics. Maintenance and continuous improvements form part of their regular work with ongoing projects.
Key Highlights:
- Custom software development
- Web application development
- Mobile app development
- Cloud solutions
Services:
- AI and machine learning solutions
- DevOps and maintenance
- Quality assurance processes
- Agile methodology projects
Contact Information:
- Website: 21century.tech
- Email: [email protected]
5. SCAND
SCAND creates applications in Kotlin that address specific industry challenges. The company uses the language for Android projects where performance and features matter most. Developers also build server-side components and support migrations from older setups to Kotlin.
Cross-platform work with Kotlin Multiplatform allows shared code across Android, iOS, and other environments. SCAND handles web development tasks and integrates Jetpack libraries for Android enhancements. Quality assurance runs throughout the process while maintenance continues after deployment. Backend services rely on frameworks like Ktor for reliable operations.
Key Highlights:
- Custom Kotlin app development
- Cross-platform applications
- Android mobile app development
- Web development
- Migration to Kotlin
Services:
- Kotlin backend development
- App QA and testing
- Jetpack integration
- App maintenance and support
Contact Information:
- Website: scand.com
- Email: [email protected]
- Phone: +1 (773) 831-4876
- Address: Marszalkowska 58 Warsaw PL, 00-545
- Facebook: www.facebook.com/ScandLtd
- Linkedin: www.linkedin.com/company/scand
- Twitter: x.com/ScandLtd
6. Oski Solutions
Oski Solutions designs and develops software for enterprises and startups. The company handles cloud services with options like Azure and AWS for scalability. Frontend work includes React, Vue, and Angular along with mobile frameworks.
Artificial intelligence integrations cover machine learning and generative tools when suitable. Oski Solutions works in sectors such as education, logistics, e-commerce, and retail. Cloud and DevOps practices support deployment and ongoing operations. The process includes design, development, and maintenance for complete solutions.
Key Highlights:
- Custom software development
- Cloud solutions
- Frontend development
- Artificial intelligence integrations
Services:
- DevOps and CI/CD
- Web development
- Mobile app work
- Industry-specific solutions
Contact Information:
- Website: oski.site
- Phone: +48571282759
- Email: [email protected]
- Address: Kaupmehe tn 7, 10114 Tallinn, Estonia
- LinkedIn: www.linkedin.com/company/oski-solutions
7. Innowise
Innowise develops Kotlin applications for mobile and web needs. The company offers consulting to select suitable technologies and approaches for each project. Android development forms a core part of their work with attention to user-friendly designs.
Kotlin Multiplatform helps create apps that run natively on Android and iOS from shared code. Innowise builds custom solutions from initial ideas and handles web apps plus backend systems. Migration from Java to Kotlin happens alongside mixed Java-Kotlin integrations when useful. Maintenance and staff augmentation options support clients after initial delivery.
Key Highlights:
- Kotlin consulting
- Android development with Kotlin
- Custom Kotlin app development
- Kotlin backend development
Services:
- Java to Kotlin app migration
- Kotlin and Java integration
- Maintenance and support
- Dedicated Kotlin developers
Contact Information:
- Website: innowise.com
- Phone: +1 917 267 7727
- Email: [email protected]
- Address: 7901 4th St N STE 300, St. Petersburg, FL 33702, USA
- LinkedIn: www.linkedin.com/company/innowise-group
- Twitter: x.com/innowisegroup
8. Hyperlink InfoSystem
Hyperlink InfoSystem develops Kotlin applications for Android and cross-platform needs. The company creates custom solutions that incorporate features like AI and IoT where appropriate. Agile methods guide the development process to allow adjustments along the way.
Native Android work receives attention alongside multiplatform options using Kotlin Multiplatform. Hyperlink InfoSystem handles integration tasks and focuses on security and scalability in the apps. Web and blockchain elements appear in some projects depending on client requirements. Maintenance and support continue after the initial build phase.
Key Highlights:
- Custom Kotlin solutions
- Native Android apps
- Cross-platform development
- AI and IoT integration
Services:
- Web development
- Blockchain solutions
- Agile project management
- App maintenance
Contact Information:
- Website: www.hyperlinkinfosystem.com
- Phone: +91 8000-161-161
- Email: [email protected]
- Address: C-106/B, Ganesh Meridian, Opp. Gujarat High Court, S. G. Highway, Ahmedabad, Gujarat, 380061
- LinkedIn: www.linkedin.com/company/hyperlinkinfosystem
- Facebook: www.facebook.com/Hyperlink-infosystem-140449209446270
- Twitter: x.com/hyperlinkinfo
- Instagram: www.instagram.com/hyperlink_infosystem
9. Trank Technologies
Trank Technologies works on Kotlin mobile applications for multi-platform scenarios. The company addresses native Android development and web front-end elements in projects. Performance and user-focused design shape the approach to each app.
Migration services help move existing applications to Kotlin. Trank Technologies provides maintenance after launch and integration with other systems. Digital transformation efforts form part of the work with businesses seeking updates. Custom development covers various industry applications based on specific needs.
Key Highlights:
- Custom app development
- Multi-platform mobile apps
- Android development
- App migration
Services:
- Maintenance and support
- System integration
- Web front-end work
- Digital transformation projects
Contact Information:
- Website: www.tranktechnologies.com
- Phone: +919311397535
- Email: [email protected]
- Address: Plot no. 112,3rd Floor, Udyog Vihar Phase 1, Sector 20, Gurugram, Haryana 122008
- LinkedIn: www.linkedin.com/company/trank-technologies-official
- Facebook: www.facebook.com/TrankTechnologies
- Twitter: x.com/tranktechno
- Instagram: www.instagram.com/tranktechnologies
10. Netguru
Netguru builds Android applications with Kotlin to make development faster and safer. The company uses the language’s features for code that stays maintainable. Full-cycle development covers everything from planning to launch.
Consulting services help decide on Kotlin for particular projects. Netguru focuses on modern apps that work well on Android devices. Support options extend beyond initial delivery. The approach combines efficiency with attention to code quality throughout.
Key Highlights:
- Android app development
- Full-cycle Kotlin projects
- Consulting services
- App support
Services:
- Code maintenance
- Feature integration
- Modern app creation
- Project planning
Contact Information:
- Website: www.netguru.com
- Email: [email protected]
- Address: Nowe Garbary Office Center, ul. Małe Garbary 9, 61-756 Poznań, Poland
- LinkedIn: www.linkedin.com/company/netguru
- Facebook: www.facebook.com/netguru
- Twitter: x.com/netguru
11. Soft-Pro
Soft-Pro creates custom software solutions for different business requirements. The company works with technologies from the Microsoft stack including Azure and ASP.NET. Frontend, backend, and CMS platforms receive attention in projects.
Web application development focuses on responsive and secure apps. Soft-Pro handles cloud development with migration and management services. Artificial intelligence solutions cover machine learning and automation needs. The approach includes full-stack expertise for integration and performance.
Key Highlights:
- Custom software development
- Web application development
- Cloud development
- Artificial intelligence solutions
Services:
- Frontend work
- Backend development
- CMS platform integration
- Scalable application building
Contact Information:
- Website: soft-pro.pl
- Phone: +48 571 282 759
- Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401
- LinkedIn: www.linkedin.com/in/kyrylo-o
12. Bacancy Technology
Bacancy Technology builds applications using Kotlin for Android platforms and server-side needs. The company explores features like concise code and interoperability with existing systems to create functional solutions. Kotlin Multiplatform allows code sharing that fits different environments without duplication.
Consulting sessions review business goals to align technology choices. Migration work moves applications smoothly while adding modern capabilities. Maintenance keeps everything running after launch with updates as needed. Android development emphasizes safety and performance aspects that developers find practical in daily work.
Key Highlights:
- Kotlin Android application development
- Server-side web applications
- Kotlin Multiplatform solutions
- App migration
Services:
- Maintenance and support
- Consulting services
- UI/UX improvements
- Enterprise solutions
Contact Information:
- Website: www.bacancytechnology.com
- Email: [email protected]
- Address: 422-A, 4th Floor, Pragya Tower, Road 11, Block 15, Zone 1, SEZ-PA, Gandhinagar, 382355
- LinkedIn: www.linkedin.com/company/bacancy-technology
- Facebook: www.facebook.com/BacancyTechnologyLimited
- Twitter: x.com/bacancyTech
- Instagram: www.instagram.com/bacancytechnology
13. .NET Developers
.NET Developers provides dedicated developers who focus exclusively on client projects. The company structures setups with varied experience levels to handle costs effectively while maintaining delivery timelines. Leaders guide the process with attention to technical details and project requirements.
C# .NET development creates applications inside the Microsoft framework following SOLID design principles. .NET CMS applications build web solutions on established platforms to streamline efforts. Front-end development incorporates JS frameworks for responsive interfaces that support business operations. The overall approach keeps communication open and pricing transparent for ongoing collaboration.
Key Highlights:
- Dedicated developer teams
- C# .NET development
- .NET CMS applications
- Front-end development
Services:
- Microsoft framework projects
- CMS based web solutions
- JS framework integration
- Project delivery management
Contact Information:
- Website: net-devs.com
- Phone: +48 571 282 759
- Email: [email protected]
- Address: Obrzeżna 1D, 02-691 Warszawa
- LinkedIn: www.linkedin.com/company/net-devs
14. Emerline
Emerline develops solutions with Kotlin across mobile, web, desktop, and cloud areas. The company handles complete project cycles starting from initial ideas through to continued support. Consulting examines operational challenges and suggests architectures that fit specific contexts.
Design efforts produce interfaces that feel natural for users. Android applications take advantage of Kotlin for responsive experiences on devices. Cross-platform mobile development shares logic efficiently between systems. Web and desktop work extends the same principles for consistency across different formats.
Key Highlights:
- Kotlin consulting
- Design services
- Kotlin Android app development
- Cross-platform mobile development
Services:
- Kotlin web development
- Kotlin desktop development
- Maintenance and support
- Game development
Contact Information:
- Website: emerline.com
- Phone: +16308771212
- Email: [email protected]
- Address: 801 Brickell Avenue • Suite 1970, Miami, FL 33131
- LinkedIn: www.linkedin.com/company/emerline
- Facebook: www.facebook.com/emerlinedev
- Instagram: www.instagram.com/emerline.global
15. CMARIX
CMARIX focuses on Kotlin applications tailored to business processes in various sectors. The company constructs solutions from initial concepts and upgrades older setups through careful migration. UI/UX design shapes interactions that match practical user flows.
Consulting helps clarify ideas and outline steps forward. Enterprise work automates routine tasks to reduce manual handling. Maintenance ensures stability with regular checks and adjustments. The development follows structured phases that allow for feedback and refinements along the way.
Key Highlights:
- Custom Kotlin application development
- Kotlin app migration
- UI/UX design
- Kotlin consulting services
Services:
- App maintenance and support
- Enterprise solution development
- Performance optimization
- Agile methodology projects
Contact Information:
- Website: www.cmarix.com
- Email: [email protected]
- Phone: +91 800-005-0808
- Address: 302-306, AWS 3, Opp. Manav Mandir, Drive-In Road, Memnagar, Ahmedabad – 380052
- Facebook: www.facebook.com/cmarixinfotech
- Twitter: x.com/cmarixinfotech
- LinkedIn: www.linkedin.com/company/cmarix
- Instagram: www.instagram.com/cmarixinfotech
16. A-listware
A-listware connects businesses with software developers for project work. The company manages setups that fit different needs through outsourcing and augmentation options. Communication stays smooth with dedicated support during development.
Software development covers custom solutions and modernization of legacy systems. Consulting helps with planning and infrastructure matters. Cloud application development and enterprise software come up in various engagements. Data analytics and cybersecurity services round out the offerings for complete IT support.
Key Highlights:
- Software development
- Software consulting
- Dedicated development teams
- Cloud application development
Services:
- UX/UI design
- Testing and QA
- IT consulting
- Infrastructure services
- Help desk services
Contact Information:
- Website: a-listware.com
- Phone: +1 (888) 337 93 73
- Email: [email protected]
- Address: North Bergen, NJ 07047, USA
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
17. Sidekick Interactive
Sidekick Interactive works with Kotlin developers for native mobile applications. The company assembles expertise for Android-focused projects. Development emphasizes clean implementation and integration points.
Consulting reviews project scopes to suggest suitable approaches. Sidekick Interactive handles full development cycles where Kotlin fits the needs. Support options help maintain applications ongoing. The focus stays on practical solutions for mobile environments.
Key Highlights:
- Kotlin developer expertise
- Native mobile applications
- Project consulting
- Application development
Services:
- Android development
- Integration work
- Maintenance support
- Technology review
Contact Information:
- Website: www.sidekickinteractive.com
- Phone: 1 (800) 965-1651
- Email: [email protected]
- Address: 460 Rue Sainte-Catherine O #424, Montreal, Quebec H3B 1A7
- LinkedIn: www.linkedin.com/company/sidekick-interactive
- Facebook: www.facebook.com/sidekickinteractive
- Twitter: x.com/SidekickInter
18. Gilzor
Gilzor works on custom software development for both early-stage startups and growing businesses looking to expand their operations. The company starts with idea validation to check whether concepts hold up in practice before heavy investment begins. Consulting sessions review technology choices and architecture options that could fit particular project constraints. Business analysis helps refine requirements so development stays focused on actual user needs rather than assumptions.
Mobile development delivers applications for iOS and Android that handle real-world usage scenarios. Web development includes everything from initial design through testing and later maintenance phases. Research and development efforts create proofs of concept when new technologies or ambitious features come into play. UI/UX design follows a user-centric method to make interfaces feel intuitive. Quality assurance catches issues early while support and maintenance keep products stable after release. Go-to-market assistance covers strategy elements like channel selection and performance tracking once the product reaches users.
Key Highlights:
- Custom software development
- Idea validation
- Mobile development
- Web development
- Research and development
Services:
- Consulting and troubleshooting
- Business analysis
- UI/UX design
- Quality assurance
- Support and maintenance
- Go-to-market strategy
Contact Information:
- Website: www.gilzor.com
- Email: [email protected]
- Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
19. JetRuby
JetRuby focuses on Kotlin for Android application development with full-cycle involvement from initial discussions through deployment. The company plans architecture early to set a solid foundation for later stages. UI/UX design ensures interfaces feel natural and align with intended user behaviors. Coding leverages Kotlin characteristics to keep code cleaner and easier to extend over time.
QA testing verifies behavior under different conditions before launch. Dedicated teams or project-based engagements adapt to varying client preferences. Consultation reviews project details to identify suitable technical directions. Maintenance support addresses post-release needs so applications remain functional as circumstances change. The approach keeps documentation clear for anyone who works on the codebase later.
Key Highlights:
- Kotlin custom development
- Full-cycle services
- Architecture planning
- UI/UX design
- QA testing
Services:
- Deployment processes
- Maintenance support
- Consultation
- Android application work
Contact Information:
- Website: jetruby.com
- Phone: +14155087706
- Email: [email protected]
- Address: 535 Mission st, San Francisco, CA 94105, USA
- LinkedIn: www.linkedin.com/company/jetruby-agency
- Facebook: www.facebook.com/jetruby.agency
20. Mobian Studio
Mobian Studio assembles dedicated engineering teams for companies that need reliable software delivery without building everything internally. The company supports outsourcing arrangements where full responsibility for delivery stays in house or outstaffing where engineers integrate directly into client teams. Mobile solutions and AI systems appear frequently in projects across healthcare, fintech, and logistics sectors. End-to-end product development handles the journey from early wireframes all the way to production deployment with proper documentation.
Legacy integration connects fresh components to older systems without unnecessary disruption. Post-launch partnership continues with bug fixes, scaling advice, and adjustments based on real usage data. Architecture work stresses clean patterns and test coverage so future changes remain manageable. Domain knowledge in regulated fields helps address compliance and specific workflow requirements that matter in those areas. The overall process keeps communication straightforward and adapts as priorities shift during development.
Key Highlights:
- Dedicated engineering teams
- Mobile solutions
- AI systems
- End-to-end product development
- Legacy integration
Services:
- Post-launch partnership
- Scalable architecture design
- Domain-specific development
- Full-stack delivery
Contact Information:
- Website: mobian.studio
- Email: [email protected]
- Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
- LinkedIn: www.linkedin.com/company/mobian-studio
Conclusion
Kotlin has clearly carved out a strong place in mobile development, especially for Android projects that need to balance speed, safety, and long-term maintainability. What stands out isn’t just the language itself, but how different companies approach it – some lean heavily into custom architecture for complex enterprise flows, while others focus on quick iterations for startups testing ideas in the market. It all depends on the specific challenges at hand, whether that’s integrating with legacy systems, handling high loads, or building features that feel native across platforms.
In the end, choosing the right partner comes down to how well they understand your domain and delivery expectations. Kotlin delivers real advantages when used thoughtfully, but the difference maker remains the experience behind the code. Take time to review portfolios, ask about past similar projects, and see how teams handle edge cases and ongoing evolution. That way, you end up with an application that doesn’t just work today, but continues to serve the business as it grows.