Top Kotlin Developers
Kotlin has become the preferred language for Android development and is rapidly expanding into backend services and multiplatform applications. Its concise syntax, null safety, and full interoperability with Java make it a practical choice for teams modernizing existing codebases or building new products from scratch.
Kotlin developers on Clutch are vetted through a verified review process, so you can compare firms based on real client outcomes — not just self-reported credentials. These companies build native Android applications, server-side systems using Ktor or Spring Boot, and cross-platform solutions with Kotlin Multiplatform (KMP). Related directories: Android app development companies, mobile app development companies, and the full Kotlin developers directory.
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$5,000+$25 - $49 / hr50 - 249Wilmington, DE
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See all 42 projectsDigiTrends is a software development company specializing in tailored software solutions, particularly in the healthcare and pharmaceutical sectors. The company has received overwhelmingly positive feedback, with 100% of reviewers praising their expertise in custom software creation and effective project management. Common themes in reviews highlight their strong communication skills and domain knowledge, leading to successful project implementations.
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$50,000+$150 - $199 / hr50 - 249Herndon, VA
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See all 24 projectsBlue Whale Apps is a Custom Software Development company specializing in tailored software solutions, including mobile app development for iOS and Android. Reviews consistently highlight their professional project management, technical expertise, and responsive communication. Feedback is overwhelmingly positive, with clients praising their ability to deliver functional and innovative solutions efficiently and effectively. Notably, 100% of reviewers commend their communication and problem-solving skills.
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$10,000+$25 - $49 / hr10 - 49Alexandria, Egypt
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See all 15 projectsIdentity Solutions is a custom software creation company that excels in delivering tailored software development and bespoke software solutions. With 100% positive feedback, clients praise their excellent project management, on-time delivery, and exceptional communication skills. Mohammad's leadership ensures intuitive, user-friendly applications that meet complex requirements effectively.
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$50,000+$150 - $199 / hr10 - 49Chicago, IL
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See all 45 projectsRed Foundry is a bespoke software development company that excels in creating tailored software solutions, with a strong emphasis on mobile app development. Reviews highlight their excellent project management, responsiveness, and alignment with client needs, resulting in successful project outcomes. Approximately 100% of reviewers praised their communication and ability to deliver on time, while 83% noted their adaptability and collaborative approach.
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$75,000+$150 - $199 / hr250 - 999New York, NY
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See all 37 projectsFueled is a bespoke software development company specializing in custom software creation, with a focus on app development across various platforms. Overall feedback from their clients is overwhelmingly positive, with approximately 90% highlighting their attention to detail, project management skills, and ability to deliver tailored solutions. Fueled's dedication to client success and high-quality software engineering makes them a top choice for custom software needs.
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$5,000+< $25 / hr50 - 249Gandhinagar, India
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See all 61 projectsPrismetric is a custom software development company offering tailored software solutions, with a strong emphasis on full-stack development. While 57% of reviews highlight their commitment and communication, 14% of feedback indicates dissatisfaction, citing project delays and quality concerns. Despite mixed reviews, Prismetric's dedication to delivering robust software solutions remains a key theme across customer experiences.
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$75,000+$100 - $149 / hr50 - 249Louisville, KY
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See all 14 projectsSlingshot is a custom software development company specializing in bespoke software creation and full-stack development. Reviews indicate a consistently positive reception, with over 90% expressing satisfaction with their tailored solutions. Clients laud Slingshot for their innovation, adaptive project management, and commitment to exceeding expectations in software engineering. Their ability to transform ideas into functional, efficient software is frequently highlighted.
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$10,000+$25 - $49 / hr250 - 999Ho Chi Minh City, Vietnam
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See all 9 projectsSaigon Technology is a Custom Software Creation company that specializes in software development, particularly in IT staff augmentation and developing web and desktop applications. With positive feedback from 100% of reviewers, clients highlight their technical expertise, timely delivery, and seamless integration with existing teams. The company is praised for high-quality code, strong communication, and flexibility in addressing client needs, making it a dependable partner for tailored software development projects.
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$25,000+$25 - $49 / hr10 - 49Warszawa, Poland
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See all 15 projectsSmartym Pro is a full stack software development company specializing in custom software creation, managed software development, and bespoke software development. The reviews reflect a 100% positive sentiment, highlighting their effective project management, technical expertise, and timely delivery. Approximately 80% of reviewers commend their ability to enhance product quality and meet deadlines consistently.
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$10,000+$100 - $149 / hr10 - 49Austin, TX
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See all 18 projectsJackrabbit Mobile is a bespoke software development company specializing in custom software creation and full stack software development. The reviews highlight their professionalism, transparency, and ability to deliver high-quality solutions within budget and deadlines. An estimated 100% of reviewers commend their project management and communication, with several emphasizing their commitment to overcoming complex challenges without additional costs.
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$25,000+$25 - $49 / hr10 - 49Kharkiv, Ukraine
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See all 24 projectsRedCat Ltd is a bespoke software development company specializing in custom software creation and full-stack software development. The company's dedication to project success, as highlighted by 100% of reviewers, is consistently praised, with particular emphasis on their effective project management and seamless communication. Approximately 80% of reviewers commend their cost-effective solutions and technical expertise.
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$25,000+$50 - $99 / hr50 - 249Split, Croatia
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See all 5 projectsProfico is a custom software development company specializing in bespoke software creation, end-to-end software development, and full stack software development. The company consistently receives positive feedback for its efficiency, communication, and cultural fit, with 100% of reviewers reporting on-time delivery and high satisfaction with their projects. Notably, Profico is praised for improving platform stability and user satisfaction across diverse industries.
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$25,000+$100 - $149 / hr10 - 49Gainesville, FL
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See all 18 projectsAtmosphere Apps is a custom software creation company specializing in tailored and end-to-end software development. With an impressive track record, they consistently deliver high-quality solutions, earning positive feedback for their commitment to client needs. Over 90% of reviews highlight their proactive and detail-oriented approach, emphasizing their ability to transform complex processes into efficient digital tools, maintaining strong client relationships.
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$5,000+$50 - $99 / hr10 - 49Stockholm, Sweden
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See all 18 projectsSlashdev is a Custom Software Creation company specializing in bespoke software development and offering full-stack software development services. The reviews indicate a 100% positive feedback rate, highlighting Slashdev's ability to deliver projects timely, provide skilled developers, and maintain excellent communication. Approximately 80% of reviewers praised their flexibility and quick recruitment process, while several noted competitive pricing and alignment with client values.
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$50,000+$50 - $99 / hr50 - 249Adma w Dafnah, Lebanon
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See all 15 projectsEurisko is a company specializing in tailored and full-stack software development with a focus on delivering bespoke software solutions. Their work is consistently praised for professionalism, responsiveness, and timely delivery, with no negative feedback reported across the reviews. Approximately 100% of reviewers highlight their team spirit and partnership approach, emphasizing their commitment to building the best product for clients.
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$75,000+$50 - $99 / hr50 - 249Zagreb, Croatia
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See all 13 projectsDECODE is an end-to-end software development company specializing in custom software creation, particularly in mobile application development and integration with backend systems. The company is lauded for its technical expertise and professionalism, with 100% of reviews highlighting their seamless integration into clients' workflows and 100% positive feedback on their project execution and team collaboration.
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$25,000+$100 - $149 / hr50 - 249Chicago, IL
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See all 15 projectsFoxbox Digital is a Custom Software Development company specializing in tailored and end-to-end software engineering solutions. They are praised for their seamless integration into client teams, with 100% of reviewers highlighting their excellent communication and project management. The company consistently delivers projects on time and within budget, with 100% of reviews noting their impressive adaptability and team collaboration.
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$5,000+$25 - $49 / hr10 - 49Bengaluru, India
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See all 21 projectsUPDOT® is a bespoke software development company that excels in custom software creation and full-stack development. With a commitment to understanding client needs, they deliver visually pleasing and functional results, as evidenced by 100% of reviewers praising their proactive approach and project management skills. Clients appreciate their clean code and responsiveness, although some suggest improvements in meeting documentation and scaling timelines.
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$5,000+$25 - $49 / hr10 - 49L'viv, Ukraine
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See all 22 projectsUpUp is a versatile web development company specializing in WordPress, Shopify, and Webflow, known for its proficiency in UI/UX design and branding services. Across numerous reviews, UpUp is consistently praised for its reliability, technical expertise, and ability to deliver high-quality work under tight deadlines. With over 90% of feedback highlighting their professionalism and effective project management, clients appreciate their strategic partnership approach and commitment to achieving business goals.
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$5,000+$50 - $99 / hr50 - 249Kharkiv, Ukraine
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See all 37 projectsRequestum is a custom software development company specializing in tailored and full-stack software development solutions. Across their reviews, clients praise their responsiveness, high-quality output, and effective project management, with 100% of reviewers impressed by their dedication and ability to deliver on time. The company is recognized for its collaborative approach, enhancing projects with innovative suggestions and maintaining smooth communication.
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$10,000+$50 - $99 / hr50 - 249Santa Monica, CA
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See all 20 projectsPremiersoft is a Custom Software Creation company specializing in tailored software development and end-to-end software engineering solutions. The overall feedback from clients is overwhelmingly positive, with 100% of reviews highlighting their timely project completion, efficient communication, and strong cultural alignment with partners. Approximately 67% of reviewers emphasize their impressive project management and adherence to deadlines.
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$1,000+< $25 / hr50 - 249Ahmedabad, India
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See all 16 projectsi-HiddenTalent is a Custom Software Development company renowned for its tailored software solutions, including mobile app development, web design, and advanced digital tools. With a 100% satisfaction rate, clients emphasize their seamless communication, technical expertise, and adherence to deadlines. Approximately 67% of reviewers highlight their proactive problem-solving and adaptability, making i-HiddenTalent a preferred choice for bespoke software development needs.
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$50,000+$50 - $99 / hr10 - 49Sandton, South Africa
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See all 12 projectsSIVOXI® is a software development company specializing in tailored software solutions, including custom software creation and end-to-end software development. Their reviews highlight an impressive 100% customer satisfaction rate, emphasizing their dedication, timely delivery, and strong project management. Reviewers frequently commend their excellent customer service and ability to exceed expectations, with 80% mentioning their proactive communication and support.
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$75,000+$150 - $199 / hr50 - 249Reigate, England
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See all 27 projectsSonin App Development is a bespoke software development company specializing in tailored software solutions and full-stack software development. Across their reviews, 100% of clients highlight their effective project management, deep understanding of client needs, and ability to integrate seamlessly with existing systems, resulting in improved business processes and increased sales. Their professionalism and business acumen are consistently praised.
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$25,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 18 projectsKrootl is a bespoke software development company specializing in custom software creation, full stack development, and software engineering. Reviews reflect a 100% positive sentiment, with clients praising their responsiveness, seamless integration with teams, and ability to deliver projects on time and within budget. Approximately 80% of reviewers highlight their excellent project management and communication skills, citing their flexibility and proactive problem-solving approach.
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$1,000+$50 - $99 / hr10 - 49Budapest, Hungary
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See all 3 projectsff.next is a Custom Software Creation company specializing in agile, end-to-end Software Development with a focus on bespoke solutions. The majority of client feedback is positive, highlighting their flexibility, IT expertise, and commitment to timely delivery. Around 80% of reviewers emphasize their adeptness in adapting to new technologies and taking ownership of projects, while some suggest improvements in process management.
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$5,000+$25 - $49 / hr50 - 249Kharkiv, Ukraine
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See all 23 projectsAESTAR is a bespoke software development company specializing in custom and full-stack software solutions. Their reviews reflect a high level of satisfaction, with 100% positive feedback and frequent mentions of timely delivery, effective communication, and innovative solutions. Approximately 67% of reviews highlight AESTAR's expertise in 3D and XR applications, reinforcing their reputation for delivering tailored software development solutions.
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$5,000+< $25 / hr50 - 249Noida, India
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See all 14 projectsBrain Technosys Pvt. Ltd is a bespoke software development company specializing in full stack and custom software creation, leveraging technologies like Angular, .NET Core, and Azure DevOps. With over 90% positive feedback, reviewers consistently praise their expertise, effective communication, and ability to deliver reliable solutions. Clients highlight their impressive project management and dedication to seeing projects through to completion.
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$5,000+< $25 / hr50 - 249Thoraipakkam, India
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See all 5 projectsWrexa Technologies LLC is a custom software development company specializing in tailored software and full-stack software development solutions across diverse sectors, including fintech and social networking. With consistently positive reviews, 100% of feedback highlights their innovation and user-centric design, while 50% acknowledge their effective project management practices, emphasizing timely delivery and stakeholder collaboration.
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$25,000+$25 - $49 / hr10 - 49Fleet, England
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See all 6 projectsEvangelist Apps is a development company specializing in mobile app creation, particularly native iOS applications, and web applications. Their reviews are overwhelmingly positive, with 100% of clients expressing satisfaction over high-quality deliverables and efficient project management. Recurring themes include their flexibility, proactive engagement, and strong technical expertise, as noted by 80% of reviewers. Clients appreciate their collaborative approach and cost-effectiveness.
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$10,000+$100 - $149 / hr10 - 49Milano, Italy
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See all 16 projectsglueglue is a digital agency specializing in UX/UI design, web, and mobile app development. Across their reviews, clients frequently highlight their effective communication and collaborative approach, with 100% noting their professionalism and strategic process. Over 90% of feedback emphasizes their flexibility and ability to meet tight deadlines, although some suggest they could benefit from scaling their team for quicker turnarounds. Overall, glueglue is praised for their problem-solving capabilities and commitment to project success.
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$25,000+$50 - $99 / hr50 - 249Cascais, Portugal
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See all 19 projectsAlty is a Custom Software Development company specializing in end-to-end software development, with a strong focus on mobile applications and UI/UX design. Across their reviews, 100% of clients praise their commitment to quality and innovative solutions, with many noting their flexibility and professionalism. Alty consistently delivers bespoke software development projects on time, often exceeding client expectations with creative problem-solving and a collaborative approach.
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$25,000+$50 - $99 / hr10 - 49Budapest, Hungary
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See all 12 projectsVeryCreatives - SaaS Development is a reputable custom software development company specializing in bespoke software creation and full-stack software development services. They consistently deliver projects on time and within budget, with 100% of reviews praising their project management and responsiveness. Clients highlight their proactive approach, strong technical expertise, and ability to understand and align with business goals, making them a preferred partner for custom software needs.
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$10,000+$50 - $99 / hr10 - 49دبي, United Arab Emirates
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See all 19 projectsGameIN is a custom software development company specializing in bespoke software creation, including full stack and end-to-end software development services. Their reviews indicate high client satisfaction, with 100% positive feedback focusing on their ability to deliver tailored solutions on time and their strong project management skills. Notably, 80% of reviewers highlight the company’s alignment with client values and needs.
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$10,000+$25 - $49 / hr10 - 49Budapest, Hungary
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See all 8 projectsSCALER Software Solutions is a custom software development company offering tailored and full-stack software development services. Reviewers consistently praise their ability to deliver high-quality, business-oriented solutions and highlight their effective project management and deep attention to detail. Over 90% of feedback is positive, emphasizing their exceptional flexibility and adherence to client requirements and timelines.
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$25,000+$25 - $49 / hr50 - 249Gonnet, Argentina
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See all 11 projectsFlux IT is a bespoke software development company specializing in custom software creation and full-stack software development services. They consistently receive positive feedback for their speed, quality, and commitment to projects, with 100% of reviewers noting their effective communication and adaptability. However, some mention areas for improvement, such as attention to detail in final deliverables and documentation during team transitions.
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$10,000+$25 - $49 / hr50 - 249Buenos Aires, Argentina
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See all 4 projectsAppstract is a custom software development company specializing in tailored software creation and full-stack software development. They consistently deliver projects on time and provide exceptional support, as highlighted by 100% of reviewers. Clients praise their adaptability, professionalism, and alignment with company values, making them a highly recommended partner for software engineering needs.
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$25,000+$25 - $49 / hr10 - 49Beograd, Serbia
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See all 13 projectsQwertify is a Custom Software Development company excelling in Full Stack and Bespoke Software Development. Highly praised by clients, 100% of reviewers commend their quality, project management, and ability to deliver complex solutions like mobile apps and CRM systems. Though noted for their premium pricing, Qwertify’s expertise in software engineering ensures consistent satisfaction and robust support, with significant success across various projects.
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$25,000+$50 - $99 / hr10 - 49Lisboa, Portugal
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See all 17 projectsLYQX is a bespoke software development company specializing in custom software creation and end-to-end software development solutions. Reviews indicate a 100% positive feedback rate, highlighting their effective project management, timely delivery, and innovative problem-solving. Approximately 75% of reviewers praise their ability to simplify complex tasks and provide tailored solutions that align with clients' needs and budgets.
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$10,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 7 projectsKapowai is a fintech development company specializing in mobile banking solutions, UX/UI design, and digital transformation projects. Reviews consistently highlight their strong project management, proactive communication, and technical expertise in fintech. Clients often commend their ability to deliver projects on time and their flexibility, with over 90% mentioning effective communication and technical proficiency as standout traits.
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$10,000+$150 - $199 / hr10 - 49Johnston, IA
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See all 2 projectsShift Interactive is a technology solutions company specializing in developing integrated IoT products and cost-effective FinTech solutions. The company is praised for its proactive project management, with 100% of reviewers highlighting its detailed communication and innovative problem-solving approach. Clients describe Shift Interactive as reliable and committed, consistently exceeding expectations and setting a high standard for vendor performance.
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$10,000+$25 - $49 / hr10 - 49L'viv, Ukraine
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See all 14 projectsEchoGlobal is a custom software development company, offering services such as tailored and managed software development. They are praised for their professionalism and effective communication, with approximately 75% of reviews highlighting their impressive service and adaptability. While some clients suggest improvements in communication, the majority express satisfaction with EchoGlobal's commitment to project success and their proactive approach to overcoming challenges.
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$5,000+$25 - $49 / hr10 - 49Jaipur, India
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See all 15 projectsBrainBox Apps is a custom software development company specializing in tailored software solutions and end-to-end software development for businesses. With a perfect track record of communication and a commitment to understanding client needs, they are praised for their transparency and impactful recommendations, with 100% positive feedback from clients.
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$25,000+$50 - $99 / hr50 - 249Allen, TX
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See all 22 projectsInceptives Digital specializes in Bespoke Software Development, offering tailored solutions like EHR system redesigns. Reviews highlight the company's expertise in Custom Software Creation, with all feedback emphasizing flawless system performance and timely delivery. 100% of reviewers commend their ability to meet client needs, underscoring their strong project management and communication skills.
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$5,000+$25 - $49 / hr50 - 249Dubai, United Arab Emirates
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See all 9 projectsIntcore is a Custom Software Development company that excels in delivering bespoke software solutions, including full stack and managed software development. Their reviews reveal a 100% satisfaction rate, with clients praising their dedication, knowledge, and the impressive quality of their software engineering. Most reviews highlight their effective project management and strong communication, with no significant areas for improvement noted.
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$10,000+$50 - $99 / hr10 - 49Shimizu, Japan
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See all 4 projectsmaeBe co., Ltd is a technology solutions provider, known for its expertise in developing web and mobile applications. The company has garnered positive feedback, with reviewers praising their technical skills, efficient communication, and ability to deliver projects on time. Approximately 100% of reviewers highlighted the company's reliability and innovative solutions, indicating a strong reputation for client satisfaction and effective project execution.
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$10,000+$150 - $199 / hr10 - 49Raleigh, NC
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See all 29 projectsLithios is a bespoke software development company specializing in custom software creation, offering services such as end-to-end software development and full-stack software development. Reviews highlight their exceptional communication, flexibility, and ability to meet deadlines. Notably, 100% of reviewers praised their professionalism and technical expertise, with multiple clients impressed by their project management and collaborative approach.
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$5,000+$50 - $99 / hr10 - 49Jaipur, India
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See all 4 projectsTrue Value Infosoft Private Limited is a bespoke software development company excelling in custom software creation and end-to-end software development. With a focus on tailored software solutions, 100% of reviewers highlight their impressive understanding of customer needs, timely deliveries, and effective communication, ensuring client satisfaction without notable areas for improvement.
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$1,000+$50 - $99 / hr50 - 249San Jose, CA
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See all 7 projectsGummicube, Inc. is a specialized app store optimization (ASO) company offering services such as metadata optimization, keyword research, and app store imagery design. Reviewers consistently highlight their professionalism, organization, and effectiveness, with approximately 90% of feedback being positive. Clients often commend Gummicube, Inc. for their data-driven approach and expert communication, though some note that services can be costly.
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$10,000+$25 - $49 / hr10 - 49
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See all 10 projectsFindigo is a bespoke software development company specializing in tailored software creation for businesses. Reviews highlight their strong project management and ability to deliver customized solutions, with 100% of feedback noting improved processes and successful outcomes. Clients appreciate their expertise in front-end and back-end technologies, though some mention minor delays due to technical challenges.
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List of the Top 15 Kotlin Development Services
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$50,000+$50 - $99 / hr50 - 249Brno, Czech Republic
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
15% Web Development75% Mobile App Development10% Other -
$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
35% Custom Software Development25% Kotlin5% Web Development40% Mobile App Development20% Other -
$75,000+$50 - $99 / hr50 - 249Wrocław, Poland
Ability to deliver
39/40.019.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Custom Software Development40% Kotlin80% Mobile App Development10% Other -
$25,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
45% Mobile App Development55% Other -
$50,000+$25 - $49 / hr250 - 999Warszawa, Poland
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Custom Software Development20% Kotlin10% Web Development20% Mobile App Development30% Other -
$10,000+$25 - $49 / hr50 - 249Limassol, Cyprus
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Custom Software Development30% Kotlin50% Mobile App Development10% Other -
$10,000+$25 - $49 / hr50 - 249Khmel'nyts'kyi, Ukraine
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
30% Custom Software Development50% Kotlin40% Mobile App Development30% Other -
$25,000+$50 - $99 / hr50 - 249Wrocław, Poland
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Mobile App Development20% AR/VR Development40% Other -
$25,000+$50 - $99 / hr50 - 249Hollywood, FL
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% Custom Software Development30% Kotlin10% Web Development60% Mobile App Development20% Other -
$25,000+$50 - $99 / hr50 - 249Karlín, Czech Republic
Ability to deliver
38.8/40.019.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
30% Web Development60% Mobile App Development10% Other -
$100,000+$50 - $99 / hr250 - 999San Francisco, CA
Ability to deliver
38/40.018/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Web Development20% Mobile App Development70% Other -
$25,000+$25 - $49 / hr250 - 999Lakeville, MN
Ability to deliver
37/40.017.2/20 Reviews9.9/10 Clients & Experience9.9/10 Market PresenceService focus
15% Custom Software Development30% Kotlin10% Web Development10% Mobile App Development15% Enterprise App Modernization50% Other -
$10,000+< $25 / hr50 - 249New Delhi, India
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
25% Custom Software Development23% Kotlin15% Web Development25% Mobile App Development35% Other -
$25,000+$25 - $49 / hr250 - 999Irving, TX
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Web Development30% Mobile App Development60% Other -
$25,000+$100 - $149 / hr10 - 49Montréal, Canada
Ability to deliver
37.3/40.017.8/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
20% Custom Software Development50% Kotlin20% Web Development40% Mobile App Development20% Other -
$5,000+$25 - $49 / hr250 - 999Jaipur, India
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Web Development60% Mobile App Development30% Other -
$50,000+$100 - $149 / hr50 - 249Los Angeles, CA
Ability to deliver
36/40.016.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Custom Software Development55% Kotlin40% Mobile App Development30% AR/VR Development10% Other -
$25,000+$25 - $49 / hr50 - 249Vinnytsia, Ukraine
Ability to deliver
38.6/40.019/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
30% Web Development70% Mobile App Development -
$5,000+$25 - $49 / hr50 - 249Cluj-Napoca, Romania
Ability to deliver
39/40.019.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Web Development50% Mobile App Development30% Other -
$25,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
37/40.017.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
50% Custom Software Development40% Kotlin50% Mobile App Development -
$10,000+$50 - $99 / hr50 - 249Cluj-Napoca, Romania
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
45% Web Development45% Mobile App Development10% Other -
$50,000+$50 - $99 / hr50 - 249București, Romania
Ability to deliver
36.8/40.017.4/20 Reviews10/10 Clients & Experience9.4/10 Market PresenceService focus
15% Web Development65% Mobile App Development20% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
38.1/40.018.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
35% Web Development35% Mobile App Development30% Other -
$10,000+$50 - $99 / hr250 - 999Greenville, SC
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Custom Software Development10% Kotlin60% Mobile App Development20% Other -
$5,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
38.9/40.020/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
60% Custom Software Development15% Kotlin40% Other -
$25,000+$25 - $49 / hr50 - 249Agoura Hills, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Custom Software Development15% Kotlin50% Mobile App Development40% Other -
$10,000+$50 - $99 / hr50 - 249Denver, CO
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Web Development60% Mobile App Development30% Other -
$50,000+$50 - $99 / hr250 - 999Tallinn, Estonia
Ability to deliver
38.7/40.019.8/20 Reviews9.1/10 Clients & Experience9.8/10 Market PresenceService focus
70% Custom Software Development15% Kotlin10% Mobile App Development20% Other -
$25,000+$50 - $99 / hr50 - 249Warszawa, Poland
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
15% Custom Software Development15% Kotlin80% Mobile App Development5% Other -
$1,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
38.6/40.019.2/20 Reviews9.6/10 Clients & Experience9.8/10 Market PresenceService focus
10% Custom Software Development11% Kotlin15% Web Development15% Mobile App Development60% Other
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Kotlin Development FAQs
Kotlin developers write applications using JetBrains' Kotlin programming language. On the Android side, they build native mobile applications using Jetpack Compose, Android SDK APIs, and modern architecture patterns like MVVM or MVI.
On the backend, Kotlin developers build server-side APIs and microservices using Ktor or Spring Boot. Furthermore, an emerging specialty is Kotlin Multiplatform (KMP), where developers write shared business logic that compiles to both Android and iOS.
Clutch’s verified pricing data shows that a focused Android app build typically ranges from $25,000 – $150,000, depending on factors like its complexity, features, and backend requirements.
Meanwhile, hourly rates for Kotlin development firms range from $25 – $149 per hour, with firms in Eastern Europe and Latin America often on the lower end and North American or Western European firms on the higher end.
Dedicated Kotlin shops maintain deeper expertise than generalist firms that work across many languages. They stay current with JetBrains' release cycle, know which libraries are production-stable versus experimental, and have established patterns for common challenges like coroutine exception handling or Compose state management. This depth typically translates to faster delivery, cleaner architecture, and lower long-term maintenance costs.
Start by outlining your project’s specific requirements and assessing their technical fit; confirm the firm has production Kotlin experience rather than Java teams that have adopted Kotlin syntax superficially.
Then, ask to see Kotlin-specific code samples or open-source contributions, and inquire about their familiarity with Kotlin coroutines, Flow, and Kotlin Multiplatform if relevant. Take a moment to thoroughly review their Clutch profiles and client ratings for projects similar to yours in complexity and industry.
Be cautious of firms that list Kotlin as a skill but whose case studies reference only Java or legacy Android development. Other red flags to watch out for include no mention of testing practices, an inability to discuss architectural patterns like Clean Architecture or MVI, and vague answers about how they handle Kotlin version migrations and library compatibility.