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Top freelance Kotlin developers available to hire

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Freelance Kotlin Developer - Jason Joseph Nathan
Freelance Kotlin Developer5.0 (1 reviews)

Full-stack engineer and fractional CTO with 10+ years shipping production systems, improving architectures, and unblocking teams. I thrive in early-stage environments where speed and technical ownership matter. My work spans TypeScript/Node, React/React Native, AWS, and backend platforms built around clean domain models, secure-by-default APIs, and observable event-driven workflows. I’m focused on helping teams ship faster, scale reliably, and build compliance-friendly systems that stay predictable under real-world load.

Freelance Kotlin Developer - Opeoluwa Lanre
Freelance Kotlin Developer5.0 (175 reviews)

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 - Olajide Olanrewaju
Freelance Kotlin Developer5.0 (352 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 - Babajide Oyafemi
Freelance Kotlin Developer5.0 (23 reviews)

I am a full-stack software engineer with over seven years of experience building and managing web applications. Passionate about solving real-world challenges through code, I specialize in developing scalable, efficient, and user-friendly solutions. My expertise spans multiple technologies, and I am committed to continuous learning to stay ahead in the ever-evolving tech landscape. Technical Expertise Frontend Development Proficient in HTML, CSS, JavaScript, TypeScript, and modern frameworks such as React.js, Redux, Next.js, and React Native. Experienced with UI libraries like Bootstrap, Material UI, Tailwind CSS, Semantic UI, and Styled Components. Backend Development Skilled in Node.js, NestJS, Express.js, Python, and Django, designing and implementing powerful backend systems that ensure performance and scalability. Mobile Development Experienced in React Native and Expo, crafting responsive and intuitive mobile applications. Databases Proficient in MongoDB, MySQL, PostgreSQL, and GridDB, ensuring efficient and well-structured data storage solutions. CMS & No-Code Solutions Capable of developing and customizing web solutions using WordPress and Wix. APIs & Development Tools Well-versed in RESTful APIs, GraphQL, authentication (JWT, Passport.js), file handling (Multer, Cloudinary), email services (Nodemailer), testing (Jest), version control (Git, GitHub), and payment gateway integration (Paystack API). Technical Writing Experience Beyond software development, I have over six years of general writing experience, including three years focused on technical content creation. I have collaborated with tech companies such as Cloudinary and Bunzz, producing clear and engaging content on topics like blockchain, video streaming, and software development. My expertise includes writing API documentation, user guides, FAQs, knowledge base articles, and technical blogs, ensuring complex concepts are accessible to diverse audiences. Work Ethic & Collaboration I am a detail-oriented, responsible, and reliable professional with excellent communication and time management skills. I thrive in collaborative environments and am always open to learning and adapting to new challenges. Let’s Connect If you're looking for a skilled full-stack developer or an experienced technical writer, I’d love to collaborate. Feel free to reach out for a discussion—I’m available for chat or video calls and respond promptly to inquiries. Looking forward to building exceptional solutions together!

Freelance Kotlin Developer - Tosin Felixson-Yusuf
Freelance Kotlin Developer5.0 (43 reviews)

My experience has ranged from an individual software contributor, through as technical team lead. Cumulatively, I have about 7 years post qualification experience as a software engineer. I have worked with multiple technologies on projects where my role includes building software features, scaling existing legacy applications mentoring junior developers and ensuring product success. As a software engineer I think first in algorithms, data structure, design, analysis and architectural patterns when solving problems. I tend to think in a non language agnostic manner, however I favour some technological stack over others as defined: I have experience in Javascript, Python, Rust, Kotlin and C++. I have an excellent understanding of these language features and I have built solutions with regards. I also have decent skills in user interface development. And building backend services and RESTFUL Apis. I am currently running MSC in computer science with Georgia Tech.

Freelance Kotlin Developer - Ahsan Zia
Freelance Kotlin Developer5.0 (416 reviews)

I have been working as a Software Engineer for 7 years delivering high quality solutions across mobile, web and desktop platforms. Each project has deepened my understanding of the development lifecycle and strengthened my commitment to delivering innovative solutions that exceed client expectations. As a team lead, I’ve collaborated with clients from the US and successfully navigated complex challenges to deliver results that surpass expectations. I focus on mentoring others, fostering best practices, and ensuring projects are delivered on time without compromising quality. It is recommended you use the schedule session option (shows my available timings for each day of the week) on my profile to join a session.

Freelance Kotlin Developer - Sylvia Barnai
Freelance Kotlin Developer5.0 (5 reviews)

I am a mobile developer who has worked on Android and iOS applications for 6 years for both large and small companies. I am very passionate about teaching and mentoring and have over 2 years of experience teaching students Java and Python programming, as well as project management.

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 - Pavneet Singh
Freelance Kotlin Developer5.0 (2166 reviews)
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I am an adept **Full Stack Software Engineer and Architect** and with a wealth of experience in frontend, backend, and Data Structures and Algorithms (DSA) solution development. My expertise spans **clean architecture, TDD(test driven development), code reviews, debugging, and profiling**, enabling the delivery of high-quality solutions within constrained short timeframes. I have worked and collaborated with numerous prominent global blue chip corporations, startups, and international clients. Additionally, have made substantial contributions to Pluralsight and Stack Overflow, boasting a reputation exceeding 37k+ and ranking within the top 0.30% of users on the latter platform. Motto: Full refund in case of no help. Discounts: - Student discount is applied automatically. • Senior software engineer, have worked as a Subject Matter Expert and lead with the primary role to develop features, solve complex bugs, architecture refinements, feature integration, and development. • I intent to deliver a top-quality experience by delivering the most optimal solutions and guidance to enlighten the learners. • I have helped many developers to fix critical bugs and implement complex features on the Codementor platform. • Teaching is one of passing and I have helped numerous mentees on their journey to become successful developers in various fields such as web, native mobile, and big data. • I have expertise in curating and simplifying the content to deliver the best experience with different analogies. • I am deft at feature implementation, debugging, and refactoring. If you have any questions, Feel free to reach out, looking forward to meeting you.

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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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