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Top freelance Kotlin developers available to hire

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Freelance Kotlin Developer - Adrian Segui
Freelance Kotlin Developer5.0 (221 reviews)

Working in the IT sector for more than 10 years. With over 10 -years of freelancing and professional experience taught me all kinds of frameworks and languages, ranging from React, Angular, Vue, Node js, Express js, React Native, Redux, Rx JS, JavaScript, Typescript, WordPress, PHP, MySQL, MongoDB, Firebase, Sqlite, Postgresql, ES5+, Python3, Machine Learning, Deep Learning, RNN, CNN, Android Java/Kotlin, iOS Swift/SwiftUI, C/C#/C++, .Net, Assembly, VBA, VB, Excel Macro, Java, Spring Boot Micro-services, Zoho, Salesforce, Hubspot, R, Shiny, STATA, MATLAB, Google Sheet, App Script, Bubble io, etc. Over my long career, I have come across all kinds of challenges and gained vast experience with different kinds of industries like portals, medical industry, perception exercise, employee management, etc. I have good experience with frontend development using React JS along with Typescript, Firebase, GraphQL, React Native, Native Script, React, Material UI, Ionic, Node.js, Web Sockets, and real-time communication. I have also worked on containerization technologies like Kubernetes, Docker, AWS, GCP, Azure etc. I am very good with backend technologies as well like Java Spring boot, Microservices, MySQL, Postgres, Elasticsearch, AWS/Google integration. Please contact me to get the result done in a professional way.

Freelance Kotlin Developer - Olajide Olanrewaju
Freelance Kotlin Developer5.0 (301 reviews)
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I am a **Multi-talented** professional adept in **Full Stack Web Development**, **Web Security Research**, and **Robotics Engineering**. As a dedicated Web Security Researcher and ethical hacker, I uncover vulnerabilities and mitigate security risks, bridging the gap between development and cybersecurity. Additionally, as a Robotics Engineer, I design and build sophisticated robotic systems, applying my deep understanding of mechanics, electronics, and programming. Passionate about crafting clean, scalable code and innovative robotics solutions, I contribute to projects that prioritize both robust development, cybersecurity practices, and cutting-edge robotic technology.

Freelance Kotlin Developer - Opeoluwa Lanre
Freelance Kotlin Developer5.0 (152 reviews)
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A full-stack software engineer passionate about crafting scalable, high-performing web solutions. With a strong focus on appealing user interfaces, efficient software design, and outstanding online platforms, I leverage my tech stack to build exceptional products. I thrive on collaborating with other talented engineers to deliver quick and effective solutions.

Freelance Kotlin Developer - Prince
Freelance Kotlin Developer5.0 (93 reviews)

Hi, I’m a senior developer and AI engineer with 7+ years on Codementor, rated 5 stars across 93+ reviews. I specialize in Python, AI/ML, computer vision, automation, and full-stack development. I focus on practical, scalable solutions — from debugging tough issues to building complete systems. I’m passionate about offline AI, human-like UI automation, and efficient system design. If you need sharp technical help grounded in real-world experience, I’m here to help.

Freelance Kotlin Developer - Ritik Rohan
Freelance Kotlin Developer5.0 (17 reviews)
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I am a Full-Stack Software Development Engineer with a track record of designing impactful data solutions that enhance platform efficiency and user experience. Currently an SDE-2 at Microsoft, I am working on a decentralized data distribution project aimed at saving $60 million annually through optimized storage. Previously, at Expedia Group, I led initiatives like the One-Checkout system and a third-party reviews integration, boosting property coverage and improving platform engagement. Skilled in Java, React JS, SpringBoot, AWS, and CI/CD, I excel in building scalable solutions that drive measurable business results.

Freelance Kotlin Developer - Deepak Vishwakarma
Freelance Kotlin Developer

Lead Software Engineer with 13+ years of experience building scalable enterprise applications across fintech and banking. Skilled in full-stack development, cloud migration, and blockchain integration. Led teams of 20+ developers and delivered high-performance, secure systems. Proficient in Go, Kotlin, TypeScript, Node.js, Java, and frontend frameworks like React.js, JavaScript and Angular.

Freelance Kotlin Developer - Rishabh Jain
Freelance Kotlin Developer5.0 (20 reviews)

I have been working for about 9 years now. During this period, I have got the chance of working on full stack with experience on Android, Web and Backend. This has made my understanding of systems very deep and I am able to solve any system challenges with this knowledge. I love to keep myself updated with all the latest technologies and things going around in the developer community.

Freelance Kotlin Developer - Sunday Akinsete
Freelance Kotlin Developer4.9 (49 reviews)

A dedicated and visionary leader with extensive experience in cross-platform mobile application development, I excel at both independent and collaborative projects. My primary focus is on Flutter—the powerful, open-source UI toolkit by Google—where I create scalable, visually engaging, and performance-driven apps that run seamlessly on multiple platforms from a single codebase. My technical background spans a range of technologies, with Flutter and Dart at the core of my current workflow. I am highly proficient in integrating Firebase’s suite of cloud-based tools (such as Firestore, Authentication, and Cloud Functions) into Flutter apps, ensuring real-time data sync, secure user management, and robust backend operations. In addition, my prior experience in native Android and iOS development, as well as knowledge of server-side frameworks and database systems, allows me to craft end-to-end solutions that are both maintainable and easily scalable. I am passionate about UI/UX principles, ensuring that every Flutter application I create is intuitive, accessible, and visually appealing. Beyond the technical details, my interpersonal skills and leadership qualities enable me to lead teams effectively, collaborate with stakeholders, and guide projects from conceptualization to successful launch. In my spare time, I enjoy experimenting with new Flutter features, exploring state management solutions like Provider or Bloc, and building user-friendly apps that streamline day-to-day tasks—ultimately striving to improve the quality of life for users everywhere.

Freelance Kotlin Developer - Andrei Müller
Freelance Kotlin Developer5.0 (11 reviews)

Hello! If you need help with game development, I'm here to help you find (and learn) effective techniques and solutions for your projects. I've been a Game and Software developer since 2010. I have solid experience with Unity, C#, and Game Design, and I'm constantly updating my skills. I also have experience with Unreal Engine 5, Level Design, 3D Modeling, and Mobile Development. I developed games for PC and Android. My background includes working on: ● SAK'D (2D metroidvania game, demo released on Steam) ● NekoSuki! ~ Kitty Love Adventure (action-adventure game, in development) ● Time Master (puzzle-platformer game, released on Steam) ● Baneville (an educational game for Brazilian schools) I have knowledge and experience with: ● Unity, C#, async-await (UniTask), advanced programming concepts ● Unreal Engine 5, Blueprints, C++ ● Godot Engine, RPG Maker, GameMaker, Ren'Py ● Game Design, Level Design, UI Programming, Game Optimization, QA ● Unity Addressables, Timeline ● Third-party assets and plugins: Platformer Project, Corgi Engine, Game Kit Controller, World Streamer 2, DoozyUI, RealtimeCSG, Rewired, Animancer, RealToon, Dialogue System for Unity, MicroSplat, MicroVerse, etc. ● Blender, VRoid Studio (3D Modeling, Rigging, Skinning, Animation) ● Photoshop, Krita, GIMP (Texturing, Image editing) ● Wwise Audio Middleware ● Mobile Development: Android (native), iOS (native), Flutter, Xamarin, Xamarin.Forms ● Kotlin, Swift, Dart, Java, Python

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Frequently asked questions

How long do Kotlin projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Kotlin project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Kotlin request on Codementor, check out our article.

How much does it cost to hire a freelance Kotlin developer?

We don’t charge anything when you post a freelance hiring request for Kotlin developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor Kotlin developers different?

We do a comprehensive technical and communications screen of all Kotlin developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Kotlin developers’ user satisfaction rates.

What happens if I’m not happy with the freelancer’s work?

As a platform, we strive to ensure you’re always happy with your Kotlin project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.

For more answers to frequently asked questions, see here.

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