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Home Software Developers Kotlin

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.

Ratings Updated: September 10, 2026
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5,521 Companies

Programming & Scripting: Kotlin

List of the Top Kotlin Development Services

  • Aiim One Logotype

    Aiim One

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    20% Custom Software Development
    20% AI Consulting
    20% AI Development +2
    20% Cybersecurity
    20% IT Staff Augmentation

    Focus Areas

    10% Kotlin
    20% PHP
    20% Python +4
    20% SQL
    10% Ember.js
    10% Redux
    10% backbone.js

    Founded in 2025, Aiim One is a midsize Cybersecurity company based in Dubai, United Arab Emirates. Their team focuses on Cybersecurity and IT staff augmentation.

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  • SHARESOFT TECHNOLOGY Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Madurai, India

    Services provided

    10% Custom Software Development
    10% E-Commerce Development
    10% Email Marketing +7
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% AJAX
    20% JavaScript +2
    20% PHP
    20% Ruby

    SHARESOFT TECHNOLOGY is a software development company. Established in 2014, the team specializes in Custom Software Development and UX/UI Design.

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  • SmartMatrix Global Technologies Pvt Ltd Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    10 - 49
    Kochi, India

    Services provided

    30% AI Development
    25% Generative AI
    15% Low/No Code Development +3
    10% Mobile App Development
    10% UX/UI Design
    10% Web Development

    Focus Areas

    10% Kotlin
    10% ASP
    10% Ember.js +7
    10% Java
    10% JavaScript
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift

    SmartMatrix Global Technologies Pvt Ltd, established in May 2020. We're an innovative startup dedicated to delivering high-quality services. Specializing in product design, software development, and

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  • Energize Global Services Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    250 - 999
    Yerevan, Armenia

    Services provided

    19% Custom Software Development
    30% IT Staff Augmentation
    10% Application Testing +8
    10% DevOps Managed Services
    10% Microservices Architecture Services
    10% Web Design
    5% Cloud Consulting & SI
    3% Staffing
    1% AI Development
    1% IT Strategy Consulting
    1% Recruiting

    Focus Areas

    10% Kotlin
    10% ASP.NET
    10% C +7
    10% C#
    10% C++
    10% ColdFusion
    10% Java
    10% JavaScript
    10% PHP
    10% Python

    Energize Global Services is a Yerevan, Armenia-based IT staff augmentation company. They focus on IT staff augmentation and Custom Software Development and were established in 2007.

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  • Renedes Logotype

    Renedes

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    5% Custom Software Development
    25% Mobile App Development
    25% Web Development +3
    20% Digital Strategy
    20% Recruiting
    5% Search Engine Optimization

    Focus Areas

    10% Kotlin
    20% HTML5
    20% PHP +4
    15% JavaScript
    15% SQL
    10% Objective C
    10% Typescript

    Launched in 2018, Renedes is a web development company. The company provides Web Development and Mobile App Development, and is small.

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  • Renova Vision OU Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    2 - 9
    Tallinn, Estonia

    Services provided

    35% Custom Software Development
    35% API Development
    10% E-Commerce Development +2
    10% Other Application Development
    10% Web Development

    Focus Areas

    10% Kotlin
    50% Java
    15% SQL +4
    10% Scala
    5% JavaScript
    5% Other programming & scripting languages
    5% XML

    Renova Vision OU, a software development company, was established in 2018. The firm focuses on Custom Software Development and API Development.

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  • BusyQA Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    50 - 249
    Mississauga, Canada

    Services provided

    35% Corporate Training & Coaching
    25% Application Testing
    10% AR/VR Development +3
    10% BI & Big Data Consulting & SI
    10% IT Strategy Consulting
    10% Web Development

    Focus Areas

    33% Kotlin
    42% Redux
    25% Ember.js

    BusyQA, a Corporate Training & Coaching company, was founded in 2010. The team specializes in Corporate Training & Coaching and Application Testing and is located in Mississauga, Canada.

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  • Alpas Technology Pvt. Ltd. Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Lalitpur, Nepal

    Services provided

    4% Custom Software Development
    12% E-Commerce Development
    12% Mobile App Development +14
    12% Web Development
    10% Web Design
    8% UX/UI Design
    6% Search Engine Optimization
    5% Digital Strategy
    5% Graphic Design
    5% Social Media Marketing
    4% Content Marketing
    4% IT Strategy Consulting
    4% Logo
    3% Product Design
    2% Branding
    2% Market Research
    2% Marketing Strategy

    Focus Areas

    10% Kotlin
    30% PHP
    30% Swift +2
    20% Objective C
    10% JavaScript

    Alpas Technology Pvt. Ltd. Is a web development firm. The Lalitpur, Nepal-based team offers Web Development and Mobile App Development.

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  • Exergy Systems Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Lahore, Pakistan

    Services provided

    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development +23
    10% Web Design
    4% Application Testing
    4% CRM Consulting and SI
    4% Cloud Consulting & SI
    4% HR Consulting
    4% IT Managed Services
    4% IT Staff Augmentation
    3% AI Development
    3% Back Office Outsourcing
    3% Content Moderation Services
    3% Content Writing Services
    3% Customer Service Outsourcing
    3% Data Annotation Services
    3% Financial Advising & Planning
    3% UX/UI Design
    2% AI Consulting
    2% Application Management & Support
    2% Enterprise App Modernization
    2% IT Strategy Consulting
    1% Call Center Services
    1% E-Commerce Development
    1% Other Application Development
    1% Web Development

    Focus Areas

    15% Kotlin
    20% Other programming & scripting languages
    15% Java +4
    15% JavaScript
    15% PHP
    10% HTML5
    10% jquery

    Exergy Systems , a software development firm, is located in Dubai, United Arab Emirates and Lahore, Pakistan. Their services include Custom Software Development and Mobile App Development.

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  • zyp Logotype

    zyp

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    10% Custom Software Development
    20% Blockchain
    15% Low/No Code Development +6
    10% AI Development
    10% AR/VR Development
    10% BI & Big Data Consulting & SI
    10% Mobile App Development
    10% Web Development
    5% IT Staff Augmentation

    Focus Areas

    10% Kotlin
    5% AJAX
    5% ASP.NET +16
    5% C#
    5% C++
    5% Go
    5% HTML5
    5% Java
    5% JavaScript
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Ruby
    5% Rust
    5% SQL
    5% Swift
    5% Typescript
    5% Visual Basic

    Zyp is an AI development company headquartered in Islamabad, Pakistan and sydney, Australia. They focus on Artificial Intelligence and Blockchain and were founded in 2021.

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  • Novexa Technologies Logotype

    Novexa Technologies

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    30% Custom Software Development
    15% Web Development
    10% AI Development +7
    10% IT Staff Augmentation
    10% Mobile App Development
    5% BI & Big Data Consulting & SI
    5% CRM Consulting and SI
    5% Cloud Consulting & SI
    5% Product Design
    5% UX/UI Design

    Focus Areas

    33% Kotlin
    34% Swift
    33% Python

    Novexa Technologies, a custom software development company, was founded in 2024. The small team focuses on Custom Software Development and Web Development.

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  • Better Host Logotype

    Better Host

    5.0 2 reviews
    $1,000+
    < $25 / hr
    2 - 9

    Services provided

    15% Branding
    15% Digital Strategy
    10% AR/VR Development +7
    10% Advertising
    10% Graphic Design
    10% Low/No Code Development
    10% Web Design
    10% Web Development
    5% Corporate Photography
    5% Marketing Strategy

    Focus Areas

    12% Kotlin
    13% AJAX
    13% Ember.js +5
    13% Redux
    13% SQL
    13% Swift
    13% Visual Basic
    10% Objective C

    Better Host offers comprehensive services including brand development, website creation, and digital marketing. The overall feedback highlights their efficiency, reliability, and high-quality deliverables. Clients were particularly impressed with their fast response rate and exceptional project management, making Better Host a commendable choice for enhancing brand visibility and online presence.

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  • Haparz Pvt Ltd Logotype

    5.0 1 review
    Undisclosed
    Undisclosed
    10 - 49
    Bengaluru, India

    Services provided

    10% Custom Software Development
    10% Cybersecurity
    10% E-Commerce Development +7
    10% IT Staff Augmentation
    10% IT Strategy Consulting
    10% IoT Development
    10% Mobile App Development
    10% Other Application Development
    10% Wearable App Development
    10% Web Development

    Focus Areas

    35% Kotlin
    35% Swift
    30% PHP

    Haparz Pvt Ltd offers web development services, delivering visually appealing and highly functional websites with exceptional technical expertise. Reviews highlight their professionalism, responsiveness, and client-centric approach, resulting in increased website traffic, reduced bounce rates, and improved conversion rates. Clients appreciate their effective project management and customization capabilities.

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  • Under Development Office Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    București, Romania

    Services provided

    35% Blockchain
    30% Mobile App Development
    20% Web Development +2
    10% UX/UI Design
    5% Business Consulting

    Focus Areas

    15% Kotlin
    15% Swift
    10% C +6
    10% C#
    10% C++
    10% Java
    10% JavaScript
    10% Other programming & scripting languages
    10% PHP

    Under Development Office is a Blockchain company. The team is headquartered in București, Romania, and their services include Blockchain and Mobile App Development.

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  • Aidnet Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    T'bilisi, Georgia

    Services provided

    20% Custom Software Development
    20% IT Staff Augmentation
    20% Mobile App Development +3
    20% Web Development
    10% E-Commerce Development
    10% Other Application Development

    Focus Areas

    10% Kotlin
    30% C#
    10% ASP.NET +5
    10% Java
    10% JavaScript
    10% SQL
    10% Swift
    10% Typescript

    Aidnet is an IT staff augmentation company. Founded in 2020, the agency provides IT staff augmentation and Custom Software Development.

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  • Argon Tech Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Hallandale Beach, FL

    Services provided

    10% Custom Software Development
    15% E-Commerce Development
    15% Mobile App Development +6
    10% API Development
    10% AR/VR Development
    10% Blockchain
    10% DevOps Managed Services
    10% Low/No Code Development
    10% Web Development

    Focus Areas

    11% Kotlin
    11% JavaScript
    11% PHP +10
    11% Python
    11% Swift
    6% ASP.NET
    6% HTML5
    6% Objective C
    6% Redux
    6% Typescript
    6% backbone.js
    6% jquery
    3% AJAX

    Argon Tech is a custom software development company. Located in Hallandale Beach, Florida and Lahore, Pakistan, the agency provides Custom Software Development and Web Development.

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  • IT ETHIOPIA Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Addis Ababa, Ethiopia

    Services provided

    35% Web Development
    25% E-Commerce Development
    20% Mobile App Development +2
    10% Low/No Code Development
    10% Search Engine Optimization

    Focus Areas

    10% Kotlin
    15% PHP
    15% Python +5
    15% SQL
    15% Visual Basic
    10% AJAX
    10% JavaScript
    10% Redux

    Based in Addis Ababa, Ethiopia, IT ETHIOPIA is a website development company. The team provides Web Development and E-Commerce Development.

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  • StyllCode Logotype

    StyllCode

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    20% Web Design
    15% E-Commerce Development
    15% Mobile App Development +6
    15% Web Development
    10% Logo
    10% Social Media Marketing
    5% Advertising
    5% Ecommerce Marketing
    5% Mobile & App Marketing

    Focus Areas

    35% Kotlin
    35% JavaScript
    20% PHP +1
    10% XML

    StyllCode is a web design agency. In Živinice, Bosnia and Herzegovina, their team offers Web Design and Web Development.

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  • India App Developer Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    10% Custom Software Development
    10% E-Commerce Development
    10% Graphic Design +10
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    10% Web Development
    5% Application Testing
    5% Content Marketing
    5% Logo
    5% Mobile & App Marketing
    5% Other Application Development
    5% Social Media Marketing

    Focus Areas

    20% Kotlin
    20% ASP.NET
    20% JavaScript +2
    20% PHP
    20% Swift

    India App Developer is a small Ahmedabad, India-based web design agency. The team offers Web Design and UX/UI Design.

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  • Reconnaissance Technologies Logotype

    5.0 2 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Abuja, Nigeria

    Services provided

    15% Custom Software Development
    20% Mobile App Development
    15% Product Design +6
    15% UX/UI Design
    10% Web Design
    10% Web Development
    5% Application Management & Support
    5% Cybersecurity
    5% E-Commerce Development

    Focus Areas

    10% Kotlin
    15% JavaScript
    15% PHP +9
    10% AJAX
    10% Objective C
    10% Swift
    5% ASP.NET
    5% C#
    5% Java
    5% Python
    5% Ruby
    5% SQL

    Reconnaissance Technologies specializes in bespoke software development, including tailored software solutions and custom app development. Reviews highlight their impressive project management, timely delivery, and effective communication. Clients particularly appreciate their ability to automate processes and improve analytics, although there's a noted area for improvement in evaluating ad-hoc resources.

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  • NotyTeam Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Kharkiv, Ukraine

    Services provided

    40% Mobile App Development
    20% Web Design
    10% Web Development +6
    5% Application Management & Support
    5% Application Testing
    5% Business Consulting
    5% Content Marketing
    5% Graphic Design
    5% UX/UI Design

    Focus Areas

    15% Kotlin
    15% Objective C
    15% Swift +6
    10% Java
    10% JavaScript
    10% Other programming & scripting languages
    10% PHP
    10% Python
    5% C++

    NotyTeam is an app development company. Based in Kharkiv, Ukraine, the firm was established in 2016. Their services include Mobile App Development and Web Design.

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  • E-Alphabits Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    40% IoT Development
    30% Mobile App Development
    20% Web Development +1
    10% AI Development

    Focus Areas

    20% Kotlin
    20% Swift
    5% AJAX +11
    5% C
    5% C++
    5% HTML5
    5% Java
    5% JavaScript
    5% Objective C
    5% PHP
    5% Python
    5% Redux
    5% SQL
    5% Typescript

    E-Alphabits is an IoT development company. The Ahmedabad, India-based agency was established in 2022. Their services include IoT development and Mobile App Development.

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  • JANAQ Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Barranco, Peru

    Services provided

    25% Custom Software Development
    15% Mobile App Development
    15% Web Development +6
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design
    5% Architectural Design
    5% Content Marketing
    5% Digital Strategy

    Focus Areas

    15% Kotlin
    15% Go
    15% Redux +8
    10% AJAX
    10% Objective C
    10% Swift
    5% HTML5
    5% JavaScript
    5% PHP
    5% Python
    5% SQL

    JANAQ is a small Barranco, Peru-based custom software development firm. The team offers Custom Software Development and Web Development.

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  • Metarouge Innovations Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    10 - 49
    Sydney, Australia

    Services provided

    10% Custom Software Development
    15% Mobile App Development
    15% Web Development +10
    10% Enterprise App Modernization
    10% Other Application Development
    5% AI Consulting
    5% Application Management & Support
    5% Application Testing
    5% E-Commerce Development
    5% IT Managed Services
    5% IT Strategy Consulting
    5% Other IT Consulting and SI
    5% Wearable App Development

    Focus Areas

    15% Kotlin
    20% Python
    15% Swift +5
    10% HTML5
    10% JavaScript
    10% PHP
    10% Redux
    10% SQL

    Metarouge Innovations is a website development firm located in Sydney, Australia. They specialize in Web Development and Mobile App Development.

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  • All Shapes Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Augsburg, Germany

    Services provided

    10% Custom Software Development
    15% Enterprise App Modernization
    15% Mobile App Development +7
    10% AI Consulting
    10% E-Commerce Development
    10% Product Design
    10% UX/UI Design
    10% Web Design
    5% Generative AI
    5% Web Development

    Focus Areas

    25% Kotlin
    25% Ruby
    25% Swift +3
    10% JavaScript
    10% Other programming & scripting languages
    5% Python

    All Shapes is a software development firm. The Augsburg, Germany-based company offers Custom Software Development and Mobile App Development.

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  • Accelaronix Technologies Pvt Ltd Logotype

    Accelaronix Technologies Pvt Ltd

    5.0 1 review
    $1,000+
    < $25 / hr
    10 - 49

    Services provided

    10% Custom Software Development
    40% Mobile App Development
    20% E-Commerce Development +2
    20% Web Development
    10% UX/UI Design

    Focus Areas

    10% Kotlin
    25% JavaScript
    15% HTML5 +5
    10% PHP
    10% Python
    10% Redux
    10% Swift
    10% Typescript

    Accelaronix is a cutting-edge technology solutions provider dedicated to transforming the way businesses engage with their customers. Specializing in innovative Web & mobile app development,

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  • Briggr Technologies LTD Logotype

    Briggr Technologies LTD

    5.0 2 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    27% Custom Software Development
    27% Mobile App Development
    26% Web Development +2
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

    10% Kotlin
    10% C#
    10% C++ +8
    10% HTML5
    10% Java
    10% PHP
    10% SQL
    10% Swift
    10% jquery
    5% XML
    5% backbone.js

    At BriggrTech, we bring together innovation, technology, and strategy to transform businesses through custom software solutions that drive growth. Our expertise spans across ERP systems, web

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  • AuroSystem Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Yerevan, Armenia

    Services provided

    30% Mobile App Development
    30% Web Development
    10% Graphic Design +3
    10% Logo
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% Kotlin
    33% PHP
    30% JavaScript +4
    10% AJAX
    10% Java
    5% Redux
    2% Ember.js

    App development company AuroSystem is in Yerevan, Armenia and Martigues, France. They provide Mobile App Development and Web Development.

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  • Ephrine Apps Logotype

    Not yet reviewed

    $1,000+
    $200 - $300 / hr
    10 - 49
    Navi Mumbai, India

    Services provided

    10% Custom Software Development
    30% Mobile App Development
    30% Web Development +4
    10% IoT Development
    10% Web Design
    5% UX/UI Design
    5% Wearable App Development

    Focus Areas

    10% Kotlin
    50% Java
    15% JavaScript +4
    10% Swift
    5% C#
    5% C++
    5% Objective C

    Ephrine Apps is an app development firm. Headquartered in Navi Mumbai, India, their small team specializes in Mobile App Development and Web Development. The firm was established in 2015.

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  • Appience Logotype

    Not yet reviewed

    $100,000+
    $25 - $49 / hr
    10 - 49
    Warszawa, Poland

    Services provided

    50% Mobile App Development
    30% Web Development
    20% UX/UI Design

    Focus Areas

    10% Kotlin
    50% Swift
    20% JavaScript +1
    20% PHP

    Located in Warszawa, Poland, Appience is a mobile app development firm. The team specializes in Mobile App Development and Web Development.

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  • Mbunity Development Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Kharkiv, Ukraine

    Services provided

    5% Custom Software Development
    50% Web Development
    40% Mobile App Development +1
    5% Application Testing

    Focus Areas

    10% Kotlin
    20% JavaScript
    10% Ember.js +8
    10% Go
    10% Redux
    10% Swift
    10% Typescript
    5% AJAX
    5% PHP
    5% Python
    5% SQL

    Mbunity Development is a Kharkiv, Ukraine-based web development company. They offer Web Development and Mobile App Development and were launched in 2016.

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  • NewGen Guru Private Limited Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Noida, India

    Services provided

    15% Custom Software Development
    25% Mobile App Development
    25% Web Development +3
    20% E-Commerce Development
    10% Web Design
    5% Application Testing

    Focus Areas

    10% Kotlin
    60% PHP
    20% Objective C +1
    10% AJAX

    NewGen Guru Private Limited is an app development firm. Their small team of employees is in Noida, India. Their team provides Mobile App Development and Web Development.

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  • Cybernite Technologies Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    10% Custom Software Development
    25% E-Commerce Development
    25% Mobile App Development +3
    25% Web Development
    10% UX/UI Design
    5% Search Engine Optimization

    Focus Areas

    10% Kotlin
    30% JavaScript
    30% PHP +3
    10% Java
    10% SQL
    10% Swift

    Cybernite Technologies is a web development firm. Founded in 2017, the company provides Web Development and Mobile App Development.

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  • Sequentia Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Pune, India

    Services provided

    25% Custom Software Development
    25% Mobile App Development
    15% Enterprise App Modernization +3
    15% IT Staff Augmentation
    10% UX/UI Design
    10% Web Development

    Focus Areas

    10% Kotlin
    20% AJAX
    20% PHP +4
    20% SQL
    10% Java
    10% JavaScript
    10% XML

    Software development company Sequentia was launched in 2014. The team provides Custom Software Development and Mobile App Development.

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  • Azillik Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Surat, India

    Services provided

    10% Custom Software Development
    25% Mobile App Development
    25% Web Development +4
    10% AR/VR Development
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% IT Staff Augmentation

    Focus Areas

    10% Kotlin
    25% Swift
    13% AJAX +4
    13% Objective C
    13% PHP
    13% SQL
    13% Visual Basic

    Website development company Azillik was established in 2020. The small team focuses on Web Development and Mobile App Development.

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  • CelloIP Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    30% Mobile App Development
    30% Web Development
    10% Application Management & Support +5
    10% UX/UI Design
    5% Application Testing
    5% Graphic Design
    5% IoT Development
    5% Web Design

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% Redux +4
    20% Swift
    10% Objective C
    10% PHP
    10% Typescript

    CelloIP Technologies is a small Ahmedabad, India-based web development company. The team focuses on Web Development and Mobile App Development.

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  • Hash Rekayasa Teknologi Logotype

    Not yet reviewed

    $10,000+
    < $25 / hr
    10 - 49
    Malang, Indonesia

    Services provided

    25% Custom Software Development
    20% IT Managed Services
    20% Mobile App Development +2
    20% Web Development
    15% Enterprise App Modernization

    Focus Areas

    10% Kotlin
    25% Go
    25% SQL +2
    25% Typescript
    15% JavaScript

    Hash Rekayasa Teknologi is a software development company. Founded in 2016, the team provides Custom Software Development and IT managed services.

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  • Modus Suisse Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Chamoson, Switzerland

    Services provided

    10% Custom Software Development
    30% Mobile App Development
    20% Web Development +4
    10% AI Development
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% Kotlin
    30% JavaScript
    30% PHP +2
    20% Java
    10% C++

    Modus Suisse, a website development company, was founded in 2011. Located in Chamoson, Switzerland, the team specializes in Web Development and Mobile App Development.

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  • Alfa Intellitech Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Sri Ganganagar, India

    Services provided

    80% Custom Software Development
    10% Mobile App Development
    10% Web Development

    Focus Areas

    10% Kotlin
    20% PHP
    20% Python +5
    10% AJAX
    10% Ember.js
    10% Objective C
    10% Redux
    10% SQL

    Alfa Intellitech is a software development firm launched in 2019. The firm provides Custom Software Development and Web Development.

    Read more
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  • Appinteg Private Limited Logotype

    Appinteg Private Limited

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49

    Services provided

    50% Mobile App Development
    20% UX/UI Design
    20% Web Development +1
    10% Low/No Code Development

    Focus Areas

    10% Kotlin
    70% PHP
    15% Swift +1
    5% Python

    Appinteg Private Limited is a mobile app development firm. Based in Noida, India, the agency was established in 2021. Their team focuses on Mobile App Development and Web Development.

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  • TechGigs LLP Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Pune, India

    Services provided

    10% Custom Software Development
    20% Mobile App Development
    20% Web Development +4
    15% AR/VR Development
    15% E-Commerce Development
    10% Blockchain
    10% Web Design

    Focus Areas

    10% Kotlin
    17% HTML5
    11% JavaScript +7
    11% PHP
    11% Python
    11% SQL
    11% Swift
    6% Ruby
    6% Typescript
    6% XML

    TechGigs LLP is a web development company founded in 2021. Their services include Web Development and Mobile App Development.

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  • StorexWeb Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Imola, Italy

    Services provided

    30% Custom Software Development
    25% Mobile App Development
    20% Web Development +2
    15% E-Commerce Development
    10% Application Testing

    Focus Areas

    10% Kotlin
    15% JavaScript
    15% PHP +7
    15% SQL
    15% Typescript
    10% Swift
    5% C#
    5% HTML5
    5% Java
    5% Python

    StorexWeb is a software development firm founded in 2017. Their services include Custom Software Development and Mobile App Development.

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  • Quick AMC Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Dubai, United Arab Emirates

    Services provided

    70% Custom Software Development
    10% AR/VR Development
    10% Low/No Code Development +1
    10% Web Design

    Focus Areas

    10% Kotlin
    13% AJAX
    13% Ember.js +6
    13% HTML5
    13% PHP
    13% Redux
    13% SQL
    6% C++
    6% Perl

    Custom software development company Quick AMC is in Dubai, United Arab Emirates. Launched in 2023, the team offers Custom Software Development and AR/VR development.

    Read more
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  • WeeCoder Logotype

    WeeCoder

    Not yet reviewed

    $5,000+
    < $25 / hr
    10 - 49

    Services provided

    20% Custom Software Development
    40% Web Development
    20% Mobile App Development +2
    10% Application Management & Support
    10% Application Testing

    Focus Areas

    10% Kotlin
    30% Ruby
    10% JavaScript +5
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% SQL
    10% Swift

    WeeCoder is a website development firm. Their team is based in Surat, India and provides Web Development and Custom Software Development.

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  • Cocociti Logotype

    Cocociti

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    50% Mobile App Development
    40% Web Development
    10% Low/No Code Development

    Focus Areas

    10% Kotlin
    20% Ruby
    20% SQL +5
    20% Swift
    15% JavaScript
    5% Ember.js
    5% PHP
    5% Redux

    Web development firm and application development firm Cocociti was founded in 2014. The team offers Web Development and Mobile App Development.

    Read more
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  • Berries and Company Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Budapest, Hungary

    Services provided

    30% Custom Software Development
    20% Enterprise App Modernization
    20% Web Development +3
    15% Mobile App Development
    10% Low/No Code Development
    5% AI Development

    Focus Areas

    10% Kotlin
    45% C#
    10% C++ +4
    10% JavaScript
    10% Python
    10% Swift
    5% Java

    Headquartered in Budapest, Hungary, Berries and Company is a custom software development company. Their services include Custom Software Development and Web Development.

    Read more
    View Profile
  • Ace Assured Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Coimbatore, India

    Services provided

    35% Mobile App Development
    25% Web Development
    10% Digital Strategy +3
    10% Ecommerce Marketing
    10% Low/No Code Development
    10% Other Digital Marketing

    Focus Areas

    10% Kotlin
    20% ASP.NET
    20% HTML5 +3
    20% PHP
    20% SQL
    10% Python

    Ace Assured, a web development company, is in Coimbatore, India and San Francisco, California. Their services include Web Development and Mobile App Development.

    Read more
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  • CIDROY Technologies Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Margao, India

    Services provided

    20% Custom Software Development
    20% Mobile App Development
    15% E-Commerce Development +6
    10% Enterprise App Modernization
    10% IT Strategy Consulting
    10% Web Development
    5% Cloud Consulting & SI
    5% IT Managed Services
    5% IT Staff Augmentation

    Focus Areas

    10% Kotlin
    20% Java
    20% JavaScript +6
    15% SQL
    15% Typescript
    5% C++
    5% HTML5
    5% Redux
    5% XML

    CIDROY Technologies, a software development firm, was established in 2020. The team specializes in Custom Software Development and Mobile App Development.

    Read more
    View Profile
  • mozok GmbH Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Köln, Germany

    Services provided

    20% Custom Software Development
    25% Web Development
    15% AI Development +3
    15% Microservices Architecture Services
    15% Mobile App Development
    10% AR/VR Development

    Focus Areas

    10% Kotlin
    6% AJAX
    6% ASP.NET +13
    6% C#
    6% Go
    6% Java
    6% JavaScript
    6% Objective C
    6% PHP
    6% Python
    6% Redux
    6% Ruby
    6% SQL
    6% Swift
    6% Typescript
    6% XML

    Web development company mozok GmbH is headquartered in Köln, Germany. Their services include Web Development and Custom Software Development.

    Read more
    View Profile
  • CodebergIT (Hiring & Tech Partner) Logotype

    CodebergIT (Hiring & Tech Partner)

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    20% Custom Software Development
    20% Mobile App Development
    20% UX/UI Design +3
    20% Web Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% Kotlin
    30% AJAX
    20% PHP +2
    20% SQL
    20% Typescript

    CodebergIT (Hiring & Tech Partner), a web design company, is located in Nagpur, India. They offer Web Design and UX/UI Design and were established in 2017.

    Read more
    View Profile

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Ability to deliver
Focus
Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 Empat
2 Futured
3 Geniusee
4 You are launched
5 Droids On Roids
6 Suffescom Solutions Inc
7 Stfalcon
8 Synergy Labs
9 nomtek
10 ArcTouch
11 itCraft
12 NERDZ LAB
13 Ackee
14 TechnoYuga
15 Konstant Infosolutions

List of the Top 15 Kotlin Development Services

  1. Empat Logotype

    Empat

    $10,000+
    $25 - $49 / hr
    250 - 999
    San Francisco, CA

    Ability to deliver

    40/40.0
    20/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    35% Custom Software Development
    25% Kotlin
    5% Web Development
    40% Mobile App Development
    20% Other
    View Profile Visit Website
  2. Futured Logotype

    Futured

    $10,000+
    $50 - $99 / hr
    50 - 249
    Brno, Czech Republic

    Ability to deliver

    38.7/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    15% Web Development
    75% Mobile App Development
    10% Other
    View Profile Visit Website
  3. Geniusee Logotype

    Geniusee

    $25,000+
    $25 - $49 / hr
    250 - 999
    Warszawa, Poland

    Ability to deliver

    40/40.0
    20/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Custom Software Development
    20% Kotlin
    10% Web Development
    20% Mobile App Development
    30% Other
    View Profile Visit Website
  4. You are launched Logotype

    You are launched

    $10,000+
    $25 - $49 / hr
    50 - 249
    Limassol, Cyprus

    Ability to deliver

    39.8/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Custom Software Development
    30% Kotlin
    50% Mobile App Development
    10% Other
    View Profile Visit Website
  5. Droids On Roids Logotype

    Droids On Roids

    $75,000+
    $50 - $99 / hr
    50 - 249
    Wrocław, Poland

    Ability to deliver

    38.4/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    10% Custom Software Development
    40% Kotlin
    80% Mobile App Development
    10% Other
    View Profile Visit Website
  6. Suffescom Solutions Inc Logotype

    Suffescom Solutions Inc

    $25,000+
    $25 - $49 / hr
    250 - 999
    New York, NY

    Ability to deliver

    39.6/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    40% Mobile App Development
    20% Other
    View Profile Visit Website
  7. Stfalcon Logotype

    Stfalcon

    $10,000+
    $25 - $49 / hr
    50 - 249
    Khmel'nyts'kyi, Ukraine

    Ability to deliver

    36.9/40.0
    17/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    30% Custom Software Development
    50% Kotlin
    40% Mobile App Development
    30% Other
    View Profile Visit Website
  8. Synergy Labs Logotype

    Synergy Labs

    $25,000+
    $50 - $99 / hr
    50 - 249
    Hollywood, FL

    Ability to deliver

    39.5/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    10% Custom Software Development
    30% Kotlin
    10% Web Development
    60% Mobile App Development
    20% Other
    View Profile Visit Website
  9. nomtek Logotype

    nomtek

    $25,000+
    $50 - $99 / hr
    50 - 249
    Wrocław, Poland

    Ability to deliver

    36.7/40.0
    17/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    20% Custom Software Development
    50% Kotlin
    45% Mobile App Development
    10% AR/VR Development
    25% Other
    View Profile Visit Website
  10. ArcTouch Logotype

    ArcTouch

    $100,000+
    $50 - $99 / hr
    250 - 999
    San Francisco, CA

    Ability to deliver

    37.8/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    10% Web Development
    20% Mobile App Development
    70% Other
    View Profile Visit Website
  11. itCraft Logotype

    itCraft

    $25,000+
    $50 - $99 / hr
    50 - 249
    Warszawa, Poland

    Ability to deliver

    37.6/40.0
    18/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    50% Custom Software Development
    40% Kotlin
    50% Mobile App Development
    View Profile Visit Website
  12. NERDZ LAB Logotype

    NERDZ LAB

    $5,000+
    $25 - $49 / hr
    50 - 249
    L'viv, Ukraine

    Ability to deliver

    38.9/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    35% Web Development
    35% Mobile App Development
    30% Other
    View Profile Visit Website
  13. Ackee Logotype

    Ackee

    $25,000+
    $50 - $99 / hr
    50 - 249
    Karlín, Czech Republic

    Ability to deliver

    38.2/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    30% Web Development
    60% Mobile App Development
    10% Other
    View Profile Visit Website
  14. TechnoYuga Logotype

    TechnoYuga

    $10,000+
    < $25 / hr
    50 - 249
    New Delhi, India

    Ability to deliver

    39.8/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    25% Custom Software Development
    23% Kotlin
    15% Web Development
    25% Mobile App Development
    35% Other
    View Profile Visit Website
  15. Konstant Infosolutions Logotype

    Konstant Infosolutions

    $5,000+
    $25 - $49 / hr
    250 - 999
    Jaipur, India

    Ability to deliver

    39.8/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    10% Web Development
    60% Mobile App Development
    30% Other
    View Profile Visit Website
  16. Excellent Webworld Logotype

    Excellent Webworld

    $25,000+
    $25 - $49 / hr
    250 - 999
    Lakeville, MN

    Ability to deliver

    36.6/40.0
    16.8/20 Reviews
    9.9/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    15% Custom Software Development
    30% Kotlin
    10% Web Development
    10% Mobile App Development
    15% Enterprise App Modernization
    50% Other
    View Profile Visit Website
  17. CitrusBits Logotype

    CitrusBits

    $50,000+
    $100 - $149 / hr
    50 - 249
    Los Angeles, CA

    Ability to deliver

    36/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    20% Custom Software Development
    55% Kotlin
    40% Mobile App Development
    30% AR/VR Development
    10% Other
    View Profile Visit Website
  18. Sidekick Interactive Logotype

    Sidekick Interactive

    $25,000+
    $100 - $149 / hr
    10 - 49
    Montréal, Canada

    Ability to deliver

    36.9/40.0
    17.4/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    20% Custom Software Development
    50% Kotlin
    20% Web Development
    40% Mobile App Development
    20% Other
    View Profile Visit Website
  19. Tapptitude Logotype

    Tapptitude

    $5,000+
    $25 - $49 / hr
    50 - 249
    Cluj-Napoca, Romania

    Ability to deliver

    39/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    20% Web Development
    50% Mobile App Development
    30% Other
    View Profile Visit Website
  20. WOLFPACK DIGITAL Logotype

    WOLFPACK DIGITAL

    $10,000+
    $50 - $99 / hr
    50 - 249
    Cluj-Napoca, Romania

    Ability to deliver

    39.6/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    45% Web Development
    45% Mobile App Development
    10% Other
    View Profile Visit Website
  21. Lampa Software Logotype

    Lampa Software

    $25,000+
    $25 - $49 / hr
    50 - 249
    Vinnytsia, Ukraine

    Ability to deliver

    38.2/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    30% Web Development
    70% Mobile App Development
    View Profile Visit Website
  22. The NineHertz Logotype

    The NineHertz

    $25,000+
    $25 - $49 / hr
    250 - 999
    Jaipur, India

    Ability to deliver

    38/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    20% Custom Software Development
    20% Kotlin
    20% Mobile App Development
    10% Application Management & Support
    20% Enterprise App Modernization
    30% Other
    View Profile Visit Website
  23. Infinum Logotype

    Infinum

    $50,000+
    $150 - $199 / hr
    250 - 999
    New York, NY

    Ability to deliver

    40/40.0
    20/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    20% Custom Software Development
    10% Kotlin
    20% Web Development
    20% Mobile App Development
    40% Other
    View Profile Visit Website
  24. UplineSoft Logotype

    UplineSoft

    $5,000+
    $25 - $49 / hr
    250 - 999
    New York, NY

    Ability to deliver

    38.9/40.0
    20/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    60% Custom Software Development
    15% Kotlin
    40% Other
    View Profile Visit Website
  25. TechAhead Logotype

    TechAhead

    $25,000+
    $25 - $49 / hr
    50 - 249
    Agoura Hills, CA

    Ability to deliver

    39.9/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    10% Custom Software Development
    15% Kotlin
    50% Mobile App Development
    20% Enterprise App Modernization
    20% Other
    View Profile Visit Website
  26. Jelvix Logotype

    Jelvix

    $50,000+
    $50 - $99 / hr
    250 - 999
    Tallinn, Estonia

    Ability to deliver

    38.9/40.0
    20/20 Reviews
    9.1/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    70% Custom Software Development
    15% Kotlin
    10% Mobile App Development
    20% Other
    View Profile Visit Website
  27. Bolder Apps Logotype

    Bolder Apps

    $5,000+
    $50 - $99 / hr
    50 - 249
    Miami, FL

    Ability to deliver

    37.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

    10% Custom Software Development
    30% Kotlin
    10% Web Development
    60% Mobile App Development
    20% Other
    View Profile Visit Website
  28. JPLoft Logotype

    JPLoft

    $10,000+
    $50 - $99 / hr
    50 - 249
    Denver, CO

    Ability to deliver

    39.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    10% Custom Software Development
    15% Kotlin
    10% Web Development
    50% Mobile App Development
    30% Other
    View Profile Visit Website
  29. WEZOM Logotype

    WEZOM

    $50,000+
    $25 - $49 / hr
    250 - 999
    Schaumburg, IL

    Ability to deliver

    39.4/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    30% Custom Software Development
    11% Kotlin
    10% Mobile App Development
    60% Other
    View Profile Visit Website
  30. LeanCode Logotype

    LeanCode

    $25,000+
    $50 - $99 / hr
    50 - 249
    Warszawa, Poland

    Ability to deliver

    39.6/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    15% Custom Software Development
    15% Kotlin
    80% Mobile App Development
    5% Other
    View Profile Visit Website

Latest Kotlin Articles

See all articles
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UI Specifications: How to Create a UI Spec Document

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Hannah Hicklen

A UI specifications document defines how every screen in your product looks, behaves, and responds to user input. Here's how to write one that developers...

Development Product Launch
Vibecoding vs. Software Development Agency: When AI-Generated Code Is Enough — and the Seven... cover image

Vibecoding vs. Software Development Agency: When AI-Generated Code Is Enough — and the Seven...

Updated August 6, 2026
Joshua Webber

Is AI-generated code enough, or is it time to bring in real developers? These seven thresholds show you the exact moment when a vibecoded build becomes a...

Development Thought Leadership, Scaling
AI-Assisted Software Development: Productivity Gains vs. Quality Risks cover image

AI-Assisted Software Development: Productivity Gains vs. Quality Risks

Updated July 15, 2026
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AI-assisted software development has already become the everyday practice for the majority of development agencies. This article dives into its benefits and...

Development Thought Leadership

Kotlin Development FAQs

Clutch features companies that build modern Android and cross-platform applications using the Kotlin programming language quarterly based on a proprietary methodology. The top Kotlin development companies for 2026 include:

  1. Futured

  2. Empat

  3. Suffescom Solutions Inc

  4. Geniusee

  5. Droids On Roids

  6. You are launched

  7. Stfalcon

  8. nomtek

  9. Synergy Labs

  10. ArcTouch

  11. Ackee

  12. Excellent Webworld

  13. TechnoYuga

  14. Brainvire Infotech Inc

  15. Sidekick Interactive

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.

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