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Top freelance Blockchain developers available to hire

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Freelance Blockchain Developer - Julian Pereira
Freelance Blockchain Developer

Hi! I'm Julian — a Senior Software Architect and Engineering Manager with 14+ years building production systems across fintech, capital markets, and crypto. I mentor across Java, Python, C/C++, Rust, TypeScript, and system design, and I've taught both English and programming to students at all levels. Whether you're a beginner finding your footing, a student preparing for interviews, or a developer levelling up your architecture skills, I adapt to where you are and help you get to where you want to be.

Freelance Blockchain Developer - Kenta Ito
Freelance Blockchain Developer

I have worked as a full-stack web developer for 10+ years after graduation of university with tech stacks like React.js, Node.js, Python Django, PHP Laravel, Go, etc. My experience: - Full-stack web development using React.js, Node.js, PHP Laravel, Python Django - Write smart contracts for Ethereum, Solana networks using Solidity, Rust - Build DApps wih web3.js, ethers.js My goal is to provide maximum security, speed, and performance in all of my work. I'm always open to conversation, feel free to reach out and discuss your project with me. Looking forward to building a long-term relationship!

Freelance Blockchain Developer - sourabh Shukla
Freelance Blockchain Developer

Hands-on Engineering Leader and AI Architect with 14+ years building engineering teams and shipping enterprise-grade systems across FinTech, HealthTech, PropTech, and Web3. Founder of [FlowiGantt](https://flowigantt.com) — an AI-powered planning platform with RAG and role-adaptive intelligence — and previously delivered AI SaaS products to enterprise customers via [Aakhya.ai](http://aakhya.ai/). Proven at making architecture decisions under resource constraints, leading teams of 20+ engineers, and achieving measurable outcomes: 70% cost optimizations, 75% reduction in development costs, and processing times cut from days to minutes.

Freelance Blockchain Developer - Pavneet Singh
Freelance Blockchain Developer5.0 (2232 reviews)

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.

Freelance Blockchain Developer - Olamiji Kareem
Freelance Blockchain Developer5.0 (11 reviews)

A full-stack developer with extensive experience developing web applications. I have extensive knowledge in: * Programming languages * Frameworks * Databases * Algorithms * Version Control (Git,etc) * Designs, and best coding practices. If you're looking for an experienced software engineer with a passion for problem-solving and creating quality solutions, please get in touch. Cheers to the bugs solved, and to the ones we're about to solve.

Freelance Blockchain Developer - Mayckon Giovani
Freelance Blockchain Developer

I am a Principal Systems Engineer specializing in post-quantum cryptography, distributed systems, and security-critical infrastructure. My work focuses on designing and building high-performance systems where correctness, security, and resilience are non-negotiable — including blockchain protocols, IIoT platforms, cryptographic infrastructure, and globally distributed backend systems. I operate across the full systems stack, from protocol design and formal methods to low-level implementation in Rust and Go, as well as scalable backend architectures and DevSecOps environments. My primary focus is engineering infrastructure that remains secure and reliable in adversarial and post-quantum threat models. I actively contribute to open-source projects involving post-quantum cryptography, distributed infrastructure, and secure systems engineering. My interests include protocol correctness, formal verification, cryptographic protocol design, and building the next generation of quantum-resilient systems. I am particularly interested in collaborating on deep-tech, cryptography, distributed infrastructure, and security-critical systems where engineering rigor and architectural excellence are essential.

Freelance Blockchain Developer - Simon Baev
Freelance Blockchain Developer

Results-driven Senior Software Engineer with over 15 years of experience in software development and a strong focus on building scalable applications. I've successfully designed and implemented complex systems, like a payment platform that addresses international transactions, and led teams in developing microservices architectures. My commitment to quality and mentorship has consistently enhanced team productivity and project outcomes, exemplified by my leadership in deploying multi-tenant cloud applications. Exceptional and proven problem-solving abilities, including identifying potential issues in the early stages. * Maintain strict attention to detail in all projects, with the internal/external customer at the crux of all decisions. * Deep background in collaborating with team members from multiple departments to achieve top-priority goals. * Multiple instances of requests by management to take over and bring troubled projects to successful resolutions. * Expertise in Vue, TypeScript, WebSocket, AWS, PostgreSQL, and other full-stack technologies

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Frequently asked questions

How long do Blockchain 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 Blockchain 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 Blockchain request on Codementor, check out our article.

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

We don’t charge anything when you post a freelance hiring request for Blockchain 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 Blockchain developers different?

We do a comprehensive technical and communications screen of all Blockchain 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 Blockchain 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 Blockchain 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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