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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: July 9, 2026
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5,452 Companies

Programming & Scripting: Kotlin

List of the Top Kotlin Development Services

  • Symbiolab GmbH Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Berlin, Germany

    Services provided

    100% Custom Software Development

    Focus Areas

    12% Kotlin
    11% C#
    11% Go +6
    11% HTML5
    11% Java
    11% Python
    11% Redux
    11% Scala
    11% Typescript

    Symbiolab GmbH is a software development firm. Based in Berlin, Germany, the company focuses on Custom Software Development.

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  • Nthrive Technologies Logotype

    Nthrive Technologies

    4.5 1 review
    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    25% Search Engine Optimization
    20% Social Media Marketing
    15% E-Commerce Development +4
    10% Advertising
    10% Content Marketing
    10% Graphic Design
    10% Web Development

    Focus Areas

    10% Kotlin
    20% ASP.NET
    20% HTML5 +4
    20% PHP
    15% Other programming & scripting languages
    10% Typescript
    5% ASP

    Nthrive Technologies offers comprehensive e-commerce solutions, including website platform migration, SEO practices, and enhancing online visibility. The reviews highlight their capability in delivering complex projects like migrating from WooCommerce to Shopify, with emphasis on transparency, dedication, and a strong understanding of client needs. Although there were occasional delays, clients are generally satisfied with the outcomes and the value for cost.

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  • Digencial Logotype

    Digencial

    Not yet reviewed

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

    Services provided

    30% UX/UI Design
    15% Product Design
    10% Graphic Design +6
    10% Low/No Code Development
    10% Mobile & App Marketing
    10% Web Development
    5% Branding
    5% Content Marketing
    5% Social Media Marketing

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% PHP +3
    20% SQL
    20% XML
    10% Python

    Digencial is an UX design agency. They are located in Jalandhar, India and have small team of experts. Their services include UX/UI Design and Web Development.

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  • Perspective Design Agency Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Odesa, Ukraine

    Services provided

    20% Branding
    20% UX/UI Design
    15% E-Commerce Development +5
    15% Low/No Code Development
    10% Web Design
    10% Web Development
    5% Graphic Design
    5% Product Design

    Focus Areas

    10% Kotlin
    25% HTML5
    25% PHP +3
    15% AJAX
    15% Swift
    10% SQL

    Based in Odesa, Ukraine, Perspective Design Agency is a small UX design agency. The team specializes in UX/UI Design and Branding.

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  • Cloud Code Hub Logotype

    Cloud Code Hub

    Not yet reviewed

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

    Services provided

    15% Branding
    15% Digital Strategy
    15% E-Commerce Development +5
    15% Video Production
    10% Low/No Code Development
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Development

    Focus Areas

    10% Kotlin
    15% C++
    15% Java +5
    15% JavaScript
    15% PHP
    15% Python
    10% Ember.js
    5% Ruby

    Cloud Code Hub is a branding company. The team is based in Sacramento, California, and their services include Branding and Digital Strategy.

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  • BlockAstro Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Karachi, Pakistan

    Services provided

    10% AI Development
    10% Blockchain
    10% Branding +8
    10% Generative AI
    10% Graphic Design
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design
    10% Web Development
    5% IT Managed Services
    5% IT Staff Augmentation

    Focus Areas

    10% Kotlin
    15% HTML5
    15% Python +6
    15% jquery
    10% AJAX
    10% PHP
    10% SQL
    10% Typescript
    5% JavaScript

    In Karachi, Pakistan, BlockAstro is a web development firm. They focus on Web Development and Branding and were founded in 2023.

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  • Adspyr Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Delhi, India

    Services provided

    10% Custom Software Development
    25% Web Design
    20% Search Engine Optimization +6
    20% UX/UI Design
    5% Graphic Design
    5% Other Digital Marketing
    5% Sales Outsourcing
    5% Social Media Marketing
    5% Video Marketing

    Focus Areas

    10% Kotlin
    10% C
    10% C# +11
    10% C++
    10% Ember.js
    10% Redux
    5% AJAX
    5% JavaScript
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% SQL
    5% Visual Basic

    Adspyr is a web design company. Headquartered in Delhi, India, their team offers Web Design and Search Engine Optimization.

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  • Vinova Logotype

    4.6 5 reviews
    $1,000+
    < $25 / hr
    50 - 249
    Singapore

    Services provided

    10% Custom Software Development
    15% Low/No Code Development
    10% Blockchain +30
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Web Development
    5% AI Development
    5% IT Managed Services
    1% AI Consulting
    1% API Development
    1% AR/VR Development
    1% Application Management & Support
    1% Application Testing
    1% CRM Consulting and SI
    1% Cloud Consulting & SI
    1% Cybersecurity
    1% DevOps Managed Services
    1% Digital Strategy
    1% E-Commerce Development
    1% ECM Consulting and SI
    1% ERP Consulting and SI
    1% Email Marketing
    1% Employer of Record (EOR) Services
    1% Enterprise App Modernization
    1% Generative AI
    1% HR Outsourcing
    1% IT Strategy Consulting
    1% IoT Development
    1% Microservices Architecture Services
    1% Mobile & App Marketing
    1% Robotics Process Automation
    1% Wearable App Development
    1% Web Design

    Focus Areas

    10% Kotlin
    25% Ruby
    20% Java +6
    15% ASP.NET
    10% Objective C
    5% Go
    5% JavaScript
    5% PHP
    5% Typescript

    Vinova is a bespoke software development firm specializing in tailored software solutions and IT support. With consistently positive feedback, 100% of reviewers highlight their professionalism, responsiveness, and flexibility. Clients appreciate their capability to deliver timely solutions and their adeptness in software engineering, making them a reliable choice for custom software creation.

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    Reviews mention Timely

    Clients have consistently praised Vinova for their timely project delivery and responsiveness. One client noted that Vinova's team consistently met deadlines and provided great support, while another highlighted their immediate and efficient response to any issues. Additionally, a client from a fintech company emphasized that Vinova delivered on time, showcasing their reliability. Overall, the sentiment regarding Vinova's timeliness is overwhelmingly positive, reflecting their commitment to meeting client needs and project timelines.
    • Software Development for Driving Education Institution
      4.0 Apr 9, 2015

      Vinova’s services are consistently very professional and, in the event of a glitch or other special circumstance, their response is immediate and efficient. They are specialists that have the skill sets that are needed to complete projects in a timely manner.

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    • IT Staff Augmentation for International School
      5.0 Apr 14, 2026

      We have worked successfully with the same staff from Vinova for over two years, helping us to deliver great software applications in a timely manner. The Vinova team consistently meet their deadlines and are responsive to our needs.

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    • Web & Mobile App Dev for Investment Events Company
      5.0 Apr 15, 2026

      Vinova's project management was fantastic. The team delivered on time and provided very good professional support. We communicated via virtual meetings.

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    • Market Research for FinTech Company
      5.0 Apr 24, 2026

      We primarily communicated via email and messaging apps. Vinova delivered on time.

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    3 of 3 reviews are 5 stars
    1 new review for Custom Software Development services
    Unknown avg. project cost

    Reviewed 3 times in the past 6 months

    Recent reviews of Vinova highlight a strong overall sentiment, with clients praising their project management and responsiveness. A fintech CTO noted Vinova's impressive proactiveness and timely delivery of a GTM strategy, while a client from an investment firm commended their ability to understand client pain points, resulting in a significant time savings. Additionally, a K-12 international school director emphasized Vinova's engagement and flexibility, indicating high satisfaction with their ongoing collaboration.
    Read 3 Recent Reviews
    1 of 2 Custom Software Development reviews are 5 stars
    1 new review for Custom Software Development in past 6 months
    Unknown avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    IT Staff Augmentation for International School

    5.0 — Vinova provides software development and IT support resources to augment an international school's in-house teams. The vendor has also provided a UX/UI designer for the client's short-term projects. Read more
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    More responsive than most other service providers

    Vinova is very responsive

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  • GeekCommerce Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Guadalajara, Mexico

    Services provided

    50% Digital Strategy
    40% Web Development
    10% AR/VR Development

    Focus Areas

    10% Kotlin
    13% Apex
    13% Ember.js +5
    13% Java
    13% JavaScript
    13% Python
    13% Redux
    12% AJAX

    GeekCommerce is a Digital Strategy company. Founded in 2016, the team provides Digital Strategy and Web Development. The agency is located in Guadalajara, Mexico.

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  • Alegna Technologies Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Kennesaw, GA

    Services provided

    20% Custom Software Development
    20% Application Testing
    20% IT Managed Services +2
    20% IT Strategy Consulting
    20% Web Development

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Python +2
    20% Redux
    20% Swift

    Alegna Technologies is a custom software development firm launched in 2011. Based in Kennesaw, Georgia, the team focuses on Custom Software Development and IT managed services.

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  • Aims IT Solution Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Dover, DE

    Services provided

    20% Content Writing Services
    20% Graphic Design
    20% Mobile App Development +3
    20% Web Development
    10% Pay Per Click
    10% Search Engine Optimization

    Focus Areas

    20% Kotlin
    20% Java
    20% JavaScript +2
    20% PHP
    20% Python

    Aims IT Solution is a Rawalpindi, Pakistan-based graphic design company. They offer Graphic Design and Web Development and were launched in 2021.

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  • Websoars Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Singapore, Singapore

    Services provided

    20% E-Commerce Development
    20% Mobile App Development
    20% Search Engine Optimization +2
    20% Web Design
    20% Web Development

    Focus Areas

    20% Kotlin
    20% Java
    20% JavaScript +2
    20% Objective C
    20% Swift

    SEO agency Websoars was launched in 2018. The small team provides Search Engine Optimization and Web Design.

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  • Spaceapps.ro Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Galați, Romania

    Services provided

    20% Mobile App Development
    20% Pay Per Click
    20% Search Engine Optimization +2
    20% Social Media Marketing
    20% Web Development

    Focus Areas

    20% Kotlin
    20% HTML5
    20% JavaScript +2
    20% Swift
    20% Typescript

    Based in Galați, Romania, Spaceapps.ro is a small social media marketing agency. The team offers Social Media Marketing and Search Engine Optimization.

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  • Cubic Agency Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    București, Romania

    Services provided

    20% CRM Consulting and SI
    20% E-Commerce Development
    20% Graphic Design +2
    20% Mobile App Development
    20% Web Development

    Focus Areas

    20% Kotlin
    20% Java
    20% JavaScript +2
    20% PHP
    20% Swift

    Cubic Agency, a graphic design company, specializes in Graphic Design and CRM consulting and SI. The agency is based in București, Romania.

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  • Fuzzy Red Panda Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    El Paso, TX

    Services provided

    30% Web Design
    25% Graphic Design
    20% Social Media Marketing +2
    15% Web Development
    10% AR/VR Development

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    Fuzzy Red Panda is a web design agency. They are based in El Paso, Texas and have small team. They focus on Web Design and Graphic Design.

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  • Pacific Infotech UK Ltd Logotype

    2.8 2 reviews
    Undisclosed
    Undisclosed
    10 - 49
    Hounslow, England

    Services provided

    10% Custom Software Development
    10% Branding
    10% Cloud Consulting & SI +7
    10% Cybersecurity
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development
    10% UX/UI Design
    10% Unified Communications Consulting & SI
    10% Web Design

    Focus Areas

    30% Kotlin
    30% Swift
    20% Java +1
    20% Objective C

    Specialists in delivering bespoke IT support services for the hotel and hospitality industry, Pacific Infotech’s Microsoft Certified consultants work with businesses across the UK to get the very

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  • Visat Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Clarksburg, MD

    Services provided

    30% Custom Software Development
    30% IT Managed Services
    30% IT Staff Augmentation +1
    10% Web Design

    Focus Areas

    20% Kotlin
    30% C++
    30% JavaScript +1
    20% Ember.js

    Visat is an IT staff augmentation company located in Clarksburg, Maryland. The team focuses on IT staff augmentation and Custom Software Development.

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  • Rividium Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Manassas, VA

    Services provided

    30% Custom Software Development
    20% Cybersecurity
    20% HR Consulting +2
    20% IT Managed Services
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Ember.js +2
    20% JavaScript
    20% Redux

    Founded in 2008, Rividium is a software development firm. The small team provides Custom Software Development and IT managed services.

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  • George Street Services Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Walkersville, MD

    Services provided

    30% Custom Software Development
    30% Cybersecurity
    30% IT Managed Services +1
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Ember.js +2
    20% JavaScript
    20% Redux

    Software development company George Street Services is located in Walkersville, Maryland. They specialize in Custom Software Development and IT managed services.

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  • Jubilant Media Studios Private Limited Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Noida, India

    Services provided

    20% Content Writing Services
    15% Mobile App Development
    15% Web Development +5
    10% Branding
    10% Graphic Design
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    20% Kotlin
    20% HTML5
    20% Java +2
    20% JavaScript
    20% PHP

    Jubilant Media Studios Private Limited is a Content Writing Services company. Their small team is located in Noida, India. Their services include Content Writing Services and Web Development.

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  • IDEAQU Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Haymarket, Australia

    Services provided

    10% Custom Software Development
    10% AI Development
    10% Application Testing +7
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% Digital Engineering
    10% IoT Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% C#
    20% HTML5 +2
    20% PHP
    20% Swift

    IDEAQU is an UX agency. Their team is in Haymarket, Australia. The company specializes in UX/UI Design and BI & big data consulting & SI.

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  • Hubotik Systems Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Des Moines, IA

    Services provided

    15% Custom Software Development
    20% Architectural Design
    20% Mobile App Development +3
    15% Application Testing
    15% ERP Consulting and SI
    15% IT Strategy Consulting

    Focus Areas

    15% Kotlin
    15% Java
    15% JavaScript +4
    15% Objective C
    15% Ruby
    15% Swift
    10% HTML5

    Hubotik Systems is an Architectural Design company. In Des Moines, Iowa and Pune, India, the firm provides Architectural Design and Mobile App Development.

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  • CodeIT Logotype

    CodeIT

    Not yet reviewed

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

    Services provided

    20% Low/No Code Development
    20% Mobile App Development
    20% Product Design +2
    20% UX/UI Design
    20% Web Development

    Focus Areas

    10% Kotlin
    20% HTML5
    20% Java +3
    20% JavaScript
    20% PHP
    10% Swift

    CodeIT is an user experience agency. The agency is based in Beograd, Serbia. Their services include UX/UI Design and Product Design.

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  • M&N Digital Service Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Karachi, Pakistan

    Services provided

    10% Digital Strategy
    10% Search Engine Optimization
    10% Social Media Marketing +12
    10% Web Design
    10% Web Development
    5% Advertising
    5% Event Management
    5% Graphic Design
    5% IT Managed Services
    5% Logo
    5% Market Research
    5% Marketing Strategy
    5% Other Design
    5% Other Digital Marketing
    5% Packaging Design

    Focus Areas

    12% Kotlin
    19% AJAX
    19% HTML5 +5
    19% Redux
    13% Visual Basic
    6% Ember.js
    6% Other programming & scripting languages
    6% PHP

    Launched in 2024, M&N Digital Service is a small Karachi, Pakistan-based Digital Strategy company. Their team specializes in Digital Strategy and Social Media Marketing.

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  • RapidData Technologies Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    250 - 999
    Dubai, United Arab Emirates

    Services provided

    15% AI Development
    15% Cloud Consulting & SI
    15% IT Strategy Consulting +5
    15% IoT Development
    10% Application Testing
    10% BI & Big Data Consulting & SI
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    17% Kotlin
    17% Go
    17% Java +3
    17% Python
    16% Scala
    16% Swift

    RapidData Technologies, an IT strategy consulting company, is based in Dubai, United Arab Emirates and New York, New York. The team offers IT strategy consulting and BI & big data consulting & SI.

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  • R2M.ai - Out of Business Logotype

    5.0 1 review
    $1,000+
    < $25 / hr
    2 - 9
    South Plainfield, NJ

    Services provided

    30% Mobile & App Marketing
    30% Web Development
    20% Email Marketing +2
    10% AR/VR Development
    10% BI & Big Data Consulting & SI

    Focus Areas

    17% Kotlin
    25% AJAX
    19% Redux +3
    13% C
    13% Objective C
    13% Visual Basic

    R2M.ai - Out of Business provided services in web development, particularly leveraging HubSpot CMS, and technical SEO consulting to build scalable and performant websites. Overall, the feedback highlights their technical proficiency and collaborative approach, though there were minor communication challenges. Clients appreciated their accommodating and detail-oriented nature, resulting in significant improvements in website performance and organic traffic.

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  • Axentit Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Ciudad de México, Mexico

    Services provided

    20% Custom Software Development
    50% Business Consulting
    20% Application Testing +1
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Ember.js +2
    20% Java
    20% PHP

    Axentit is a Business Consulting company. Located in Ciudad de México, Mexico, their team specializes in Business Consulting and Custom Software Development.

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  • Newton Vision Corporation Logotype

    Newton Vision Corporation

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249

    Services provided

    20% Custom Software Development
    20% BI & Big Data Consulting & SI
    20% Business Consulting +2
    20% Cloud Consulting & SI
    20% IT Strategy Consulting

    Focus Areas

    20% Kotlin
    20% C#
    20% C++ +2
    20% Java
    20% JavaScript

    Newton Vision Corporation is an IT strategy consulting company established in 2008. Their services include IT strategy consulting and BI & big data consulting & SI.

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  • Baltic Technology Group Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Rīga, Latvia

    Services provided

    10% Custom Software Development
    10% Application Testing
    10% BI & Big Data Consulting & SI +7
    10% Cloud Consulting & SI
    10% DevOps Managed Services
    10% IoT Development
    10% Mobile App Development
    10% Recruiting
    10% UX/UI Design
    10% Web Development

    Focus Areas

    10% Kotlin
    10% C#
    10% C++ +7
    10% Go
    10% Java
    10% JavaScript
    10% PHP
    10% Python
    10% Ruby
    10% Typescript

    Baltic Technology Group is an user experience company. Founded in 1991, the team provides UX/UI Design and BI & big data consulting & SI. The company is located in Michigan and Rīga, Latvia.

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  • G&G Technologies, Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Cary, NC

    Services provided

    10% Custom Software Development
    10% Application Testing
    10% Business Consulting +7
    10% Cloud Consulting & SI
    10% E-Commerce Development
    10% ERP Consulting and SI
    10% IT Managed Services
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Web Development

    Focus Areas

    10% Kotlin
    10% AJAX
    10% ASP.NET +7
    10% C++
    10% Java
    10% Objective C
    10% Ruby
    10% Rust
    10% Swift
    10% Visual Basic

    G&G Technologies, Inc. Is a midsize Cary, North Carolina-based cloud consulting & SI company. The team provides cloud consulting & SI and ERP consulting and SI.

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  • Marketpath CMS Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Indianapolis, IN

    Services provided

    40% Content Marketing
    20% Search Engine Optimization
    20% Web Design +2
    10% AR/VR Development
    10% Web Development

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    Marketpath CMS is an Indianapolis, Indiana-based Content Marketing company. Their services include Content Marketing and Search Engine Optimization.

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  • What's Up Doha Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Doha, Qatar

    Services provided

    20% Email Marketing
    20% Search Engine Optimization
    20% Social Media Marketing +3
    20% Web Design
    10% AR/VR Development
    10% Web Development

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    What's Up Doha is an Email Marketing company founded in 2015. Based in Doha, Qatar, the team focuses on Email Marketing and Search Engine Optimization.

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  • Level 5 Technology Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Fresno, CA

    Services provided

    40% Web Design
    15% Logo
    15% Print Design +3
    10% AR/VR Development
    10% Search Engine Optimization
    10% Web Development

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    Level 5 Technology Solutions is a web design company in Fresno, California. Established in 2009, the team focuses on Web Design and Logo.

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  • Latin Made Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Miami Beach, FL

    Services provided

    10% Business Consulting
    10% Mobile & App Marketing
    10% Mobile App Development +10
    10% Pay Per Click
    10% Social Media Marketing
    10% Web Design
    10% Web Development
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Graphic Design
    5% Logo
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    Latin Made is a social media marketing firm. They specialize in Social Media Marketing and Mobile & App Marketing and were launched in 2021. The agency is in Miami Beach, Florida.

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  • CodeIT Group Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Oslo, Norway

    Services provided

    10% Custom Software Development
    20% Cloud Consulting & SI
    20% IT Managed Services +4
    20% IT Strategy Consulting
    10% AR/VR Development
    10% IoT Development
    10% Web Design

    Focus Areas

    25% Kotlin
    25% AJAX
    25% SQL +1
    25% Swift

    CodeIT Group is an IT strategy consulting company launched in 2011. Their services include IT strategy consulting and cloud consulting & SI.

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  • Bee Global Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Doha, Qatar

    Services provided

    40% Video Production
    20% Social Media Marketing
    15% Graphic Design +2
    15% Web Design
    10% Web Development

    Focus Areas

    34% Kotlin
    33% Ember.js
    33% Redux

    Bee Global is a video production agency. They were launched in 2007, and their services include Video Production and Social Media Marketing.

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  • McGregor Media Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Glenelg, Australia

    Services provided

    50% Search Engine Optimization
    25% Web Design
    25% Web Development

    Focus Areas

    25% Kotlin
    50% Ember.js
    25% Ruby

    McGregor Media is a SEO agency. They are in Glenelg, Australia and have small team. Their services include Search Engine Optimization and Web Design.

    Read more
    View Profile
  • Euroware Logotype

    Euroware

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    30% Custom Software Development
    30% IT Strategy Consulting
    20% IT Managed Services +2
    10% Pay Per Click
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% C++ +2
    20% Java
    20% PHP

    Euroware, a custom software development company, is located in Torino, Italy. The team specializes in Custom Software Development and IT strategy consulting.

    Read more
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  • AB Advisoring Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Torino, Italy

    Services provided

    70% Search Engine Optimization
    30% Web Development

    Focus Areas

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

    AB Advisoring is a SEO services firm. Headquartered in Torino, Italy, the team specializes in Search Engine Optimization and Web Development.

    Read more
    View Profile
  • Tahill Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Charlotte, NC

    Services provided

    30% Custom Software Development
    20% Business Consulting
    20% IT Managed Services +3
    10% HR Consulting
    10% Staffing
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Ember.js +2
    20% JavaScript
    20% Redux

    Tahill is a small Charlotte, North Carolina-based software development company. The team specializes in Custom Software Development and IT managed services.

    Read more
    View Profile
  • iGroup Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    مدينة, Kuwait

    Services provided

    20% Mobile App Development
    20% Web Development
    10% E-Commerce Development +5
    10% Graphic Design
    10% IT Managed Services
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% PHP +5
    10% ASP.NET
    10% C#
    10% HTML5
    10% Swift
    10% XML

    Website development firm iGroup Solutions was founded in 2004. Headquartered in مدينة, Kuwait, the team provides Web Development and Mobile App Development.

    Read more
    View Profile
  • Massive Dynamics USA Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    New York, NY

    Services provided

    10% Custom Software Development
    10% E-Commerce Development
    10% Email Marketing +7
    10% Logo
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% ASP.NET
    20% Objective C +3
    20% Swift
    10% HTML5
    10% JavaScript

    Massive Dynamics USA is a social media marketing agency. The firm is headquartered in New York, New York. Their team specializes in Social Media Marketing and Email Marketing.

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  • New Buffers Logotype

    New Buffers

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    10% Custom Software Development
    10% AI Development
    10% API Development +7
    10% Cloud Consulting & SI
    10% DevOps Managed Services
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% Java
    20% JavaScript +2
    20% SQL
    20% Swift

    New Buffers is a SEO agency. Founded in 2022, the firm specializes in Search Engine Optimization and Web Design.

    Read more
    View Profile
  • KNOBS Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Milano, Italy

    Services provided

    15% Custom Software Development
    25% Blockchain
    25% Blockchain Marketing +3
    15% IoT Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% Kotlin
    20% AJAX
    20% Ember.js +2
    20% SQL
    20% Swift

    KNOBS, a custom software development company, was established in 2014. The firm provides Custom Software Development and IoT development.

    Read more
    View Profile
  • Sandro Manke Logotype

    Sandro Manke

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer

    Services provided

    20% Custom Software Development
    20% IT Managed Services
    20% IoT Development +2
    20% Mobile App Development
    20% Web Development

    Focus Areas

    10% Kotlin
    9% C#
    9% C++ +8
    9% Java
    9% JavaScript
    9% PHP
    9% Perl
    9% Python
    9% SQL
    9% Scala
    9% Swift

    IT managed services company Sandro Manke was founded in 2005. The agency provides IT managed services and Custom Software Development, and is small.

    Read more
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  • High Quartile Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Chesterfield, MO

    Services provided

    20% Application Management & Support
    20% BI & Big Data Consulting & SI
    20% Business Consulting +2
    20% IT Managed Services
    20% IT Strategy Consulting

    Focus Areas

    20% Kotlin
    20% AJAX
    20% JavaScript +2
    20% SQL
    20% Swift

    High Quartile is a business intelligence company. The company is based in Chesterfield, Missouri. Their services include BI & big data consulting & SI and Application Management & Support.

    Read more
    View Profile
  • TeleiosData Logotype

    TeleiosData

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    15% Custom Software Development
    15% Cloud Consulting & SI
    15% Digital Strategy +5
    15% IT Strategy Consulting
    10% Email Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Social Media Marketing

    Focus Areas

    15% Kotlin
    15% PHP
    14% HTML5 +4
    14% Java
    14% JavaScript
    14% Redux
    14% Swift

    Established in 2021, TeleiosData is a small Digital Strategy company. Their team focuses on Digital Strategy and IT strategy consulting.

    Read more
    View Profile
  • Tocaan Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    كويت, Kuwait

    Services provided

    10% Content Writing Services
    10% Corporate Photography
    10% E-Commerce Development +7
    10% Mobile App Development
    10% Pay Per Click
    10% SMS Marketing
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% Java
    20% Objective C +2
    20% PHP
    20% Swift

    Tocaan is a small social media marketing agency located in كويت, Kuwait. Their services include Social Media Marketing and Search Engine Optimization.

    Read more
    View Profile
  • Invincible Tech Systems Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Bentonville, AR

    Services provided

    10% Custom Software Development
    20% Mobile App Development
    20% Recruiting +4
    20% Staffing
    10% BI & Big Data Consulting & SI
    10% CRM Consulting and SI
    10% UX/UI Design

    Focus Areas

    10% Kotlin
    20% Java
    20% Python +5
    10% Ember.js
    10% JavaScript
    10% Scala
    10% Swift
    10% Typescript

    In Bentonville, Arkansas, Invincible Tech Systems is a mobile app development firm. The team provides Mobile App Development and Staffing.

    Read more
    View Profile
  • Foenix Hub - Out of Business Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9
    Oko Erin, Nigeria

    Services provided

    25% Branding
    25% Digital Strategy
    25% Web Development +2
    15% Web Design
    10% Low/No Code Development

    Focus Areas

    20% Kotlin
    50% JavaScript
    30% Other programming & scripting languages

    Foenix Hub - Out of Business was a website development company noted for its outstanding and responsive service. With a focus on customer service, they managed projects effectively, communicating in a timely manner. The company received 100% positive feedback, highlighting their exceptional responsiveness and impressive customer service in all reviews.

    See all 1 projects

    Industry Experience

    Foenix Hub has received positive feedback primarily in the publishing industry, where they demonstrated strong expertise in website development. Clients praised their exceptional customer service, responsiveness, and effective project management. The overall sentiment is highly favorable, highlighting their impact on personal and client projects. This provider is particularly well-suited for businesses in the publishing sector seeking reliable web development solutions.

    Read All Reviews

    Select Industry to see insights

    Publishing

    Average Project Cost Breakdown

    What Clients Have Said

    Clients have expressed high satisfaction with Foenix Hub's pricing and value for money, highlighting their outstanding customer service and responsiveness. One client noted that the company delivered exceptional website development services, with no areas for improvement identified. The overall sentiment indicates that clients feel they received excellent value relative to the costs incurred, which was a key factor in their selection of the vendor.
    Read All Reviews
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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

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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 Futured
2 Empat
3 Droids On Roids
4 Suffescom Solutions Inc
5 Geniusee
6 You are launched
7 Stfalcon
8 nomtek
9 Synergy Labs
10 Ackee
11 ArcTouch
12 Excellent Webworld
13 TechnoYuga
14 Brainvire Infotech Inc
15 Sidekick Interactive

List of the Top 15 Kotlin Development Services

  1. Futured Logotype

    Futured

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

    Ability to deliver

    39.3/40.0
    20/20 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
  2. 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
  3. Droids On Roids Logotype

    Droids On Roids

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

    Ability to deliver

    39/40.0
    19.2/20 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
  4. Suffescom Solutions Inc Logotype

    Suffescom Solutions Inc

    $25,000+
    $25 - $49 / 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

    45% Mobile App Development
    55% Other
    View Profile Visit Website
  5. Geniusee Logotype

    Geniusee

    $50,000+
    $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
  6. You are launched Logotype

    You are launched

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

    Ability to deliver

    40/40.0
    20/20 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
  7. Stfalcon Logotype

    Stfalcon

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

    Ability to deliver

    37.1/40.0
    17.2/20 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. nomtek Logotype

    nomtek

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

    Ability to deliver

    36.9/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    40% Mobile App Development
    20% AR/VR Development
    40% Other
    View Profile Visit Website
  9. 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
  10. Ackee Logotype

    Ackee

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

    Ability to deliver

    38.8/40.0
    19.2/20 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
  11. ArcTouch Logotype

    ArcTouch

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

    Ability to deliver

    38/40.0
    18/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    10% Web Development
    20% Mobile App Development
    70% Other
    View Profile Visit Website
  12. Excellent Webworld Logotype

    Excellent Webworld

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

    Ability to deliver

    37/40.0
    17.2/20 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
  13. TechnoYuga Logotype

    TechnoYuga

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

    Ability to deliver

    40/40.0
    20/20 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
  14. Brainvire Infotech Inc Logotype

    Brainvire Infotech Inc

    $25,000+
    $25 - $49 / hr
    250 - 999
    Irving, TX

    Ability to deliver

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

    Service focus

    10% Web Development
    30% Mobile App Development
    60% Other
    View Profile Visit Website
  15. Sidekick Interactive Logotype

    Sidekick Interactive

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

    Ability to deliver

    37.3/40.0
    17.8/20 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
  16. 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
  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. Lampa Software Logotype

    Lampa Software

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

    Ability to deliver

    38.6/40.0
    19/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    30% Web Development
    70% Mobile App Development
    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. itCraft Logotype

    itCraft

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

    Ability to deliver

    37/40.0
    17.4/20 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
  21. 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
  22. essensys { mReady Logotype

    essensys { mReady

    $50,000+
    $50 - $99 / hr
    50 - 249
    București, Romania

    Ability to deliver

    36.8/40.0
    17.4/20 Reviews
    10/10 Clients & Experience
    9.4/10 Market Presence

    Service focus

    15% Web Development
    65% Mobile App Development
    20% Other
    View Profile Visit Website
  23. NERDZ LAB Logotype

    NERDZ LAB

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

    Ability to deliver

    38.1/40.0
    18.6/20 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
  24. Designli Logotype

    Designli

    $10,000+
    $50 - $99 / hr
    250 - 999
    Greenville, SC

    Ability to deliver

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

    Service focus

    20% Custom Software Development
    10% Kotlin
    60% Mobile App Development
    20% Other
    View Profile Visit Website
  25. 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
  26. 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
    40% Other
    View Profile Visit Website
  27. 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% Web Development
    60% Mobile App Development
    30% Other
    View Profile Visit Website
  28. Jelvix Logotype

    Jelvix

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

    Ability to deliver

    38.7/40.0
    19.8/20 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
  29. 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
  30. Dotsquares Logotype

    Dotsquares

    $1,000+
    $25 - $49 / hr
    1,000 - 9,999
    London, England

    Ability to deliver

    38.6/40.0
    19.2/20 Reviews
    9.6/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    10% Custom Software Development
    11% Kotlin
    15% Web Development
    15% Mobile App Development
    60% Other
    View Profile Visit Website

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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.

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