
Hire the Top 3% of Blockchain Developers in 48 Hours
Toptal is a network of top Blockchain developers, engineers, consultants, and designers. Top companies work with Toptal Blockchain engineers to launch ICOs, write smart contracts, create DApps, and more.
Toptal's work was a crucial milestone that enabled us to scale our engineering teams and systems in step with our rapid growth.
Mark Marcantano, Calm
Trusted by leading brands and startups
Meet Blockchain Developers in our Exclusive Network
Featured Talent

Gheis Mohammadi
Blockchain Developer
Gheis is a blockchain expert and developer with experience in C++, C#, JavaScript, Go, and Node.js. He excels in developing blockchain services, cross-platform software, artificial intelligence and commercial software, and DApps while delivering top-notch user-friendly solutions. As a leader of the back-end, blockchain, and DevOps teams of 10+ developers, Gheis has been involved in many high-tech projects solving complex systems and identifying opportunities for improvements.

Robert Pardela
Blockchain Developer
Robert is an entrepreneur, IT manager, and developer specializing in blockchain. He has spearheaded dozens of large-scale projects, teams of over 40, and a budget of $30 million to deliver nationwide systems. Blockchain inspired him and changed the way he looked at IT systems. Robert is known for his innovation and strong ability to take a project from idea to successful implementation. He enjoys creating IoT solutions on Raspberry Pi and Arduino as a hobby.

Alisson Reinaldo Silva
Blockchain Developer
Alisson is a blockchain engineer and certified AWS Solutions Architect with over a decade of experience building software. He's managed cloud infrastructure, CI/CD pipelines, and Kubernetes clusters, conducted technical interviews, led small teams, and performed code reviews. Also, Alisson created DeFi protocols such as a liquidity locker with over $20 million in assets secured, a staking pool with token rewards, and a token launcher with configurable tokenomics.

Sven Meyer
Blockchain Developer
Sven has 20+ years of experience working on the most advanced and innovative technologies: IoT, data science, machine learning AI, and distributed systems. Since 2017 he has mainly focused on blockchain technology, working as a CTO and advisor, leading the technology and product definition. Sven developed smart contracts for blockchain-based decentralized finance platforms, token launch platforms, and real-world assets (RWA) tokenization with fractional ownership, securing over $100 million.

Daniel Trinh
Blockchain Developer
I am a lead Solidity developer with five years of experience in development and four in Blockchain. I specialize in EVM protocols, decentralized finance, and NFTs. I have built several products within the space, such as a Crowdfunding Protocol, a 200MM Stablecoin Protocol, an automated on-chain trading engine, and several NFT apps on Ethereum. I am constantly learning about new projects, best practices, and design patterns in the EVM and blockchain protocol space.

Julian Cislo
Blockchain Developer
Julian is a full-stack Web 3.0 developer and consultant. He specializes in solidity smart contracts design, development, and security considerations. He has founded QuantDeFi, a consulting company in the blockchain space that offers to solve all Web 3.0-related problems for clients looking to integrate blockchain solutions. Julian also features his skills in transaction automation, having constructed arbitrage and liquidation bots utilizing flash-loan technologies.

Ken Miyachi
Blockchain Developer
Ken is a software engineer specializing in distributed systems and Web3 technologies. He's launched multiple Ethereum Mainnet contracts, assisted with over 20 blockchain patent applications, created an NFT, and delivered MVPs. His experience includes Web2 back-end services, data analysis, and work on multimillion-dollar projects. Ken enjoys system design and is adept at creating technical solutions around business use cases.

John R. Kosinski
Blockchain Developer
As a veteran full-stack developer, John's great breadth and depth of experience include cryptocurrency, IoT, blockchain, and mobile projects. His foundation is in C and C++, with many years of experience in .NET. His work experience up until 2009 was in the NYC and NYC area. Since 2009, he's been living abroad and working remotely. John has a personal research project in the background, involving blockchain and deep neural networks.

Kaustav Chakraborty
Blockchain Developer
Kaustav is a hands-on, goal-oriented, versatile technology professional with more than two decades of experience, primarily in open-source digital technologies, such as blockchain, IoT, microservices, cloud, distributed architecture, R&D, design, and development, with a proven track record delivering consistent business results. He loves to take on technical challenges, learn about new technology innovations, and deliver successful products worldwide.

Harish Gupta
Blockchain Developer
Harish has a penchant for innovation, strategy, technology, and architecture. He is unafraid to use new approaches for thinking, evaluating, and continuous improvement. Harish designed an app to manage identities, keeping GDPR regulations, and a blockchain-based application for drone air traffic management. He has outstanding technical abilities and expertise in blockchain, DevOps, and cloud computing. Harish has delivered solutions in the financial, aerospace, and supply chain spaces.

David Braun
Blockchain Developer
David is a senior software engineering generalist with blockchain and security experience. With two years of management training and strong communication skills, he excels at bridging business requirements with modern technology. His EECS degree from U.C. Berkeley is evidence of his technical depth. David's current passion is building on his experience as a leader to maximize team effectiveness through industry best practices.

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3%Pass Rate
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Why Organizations Choose Toptal®

Toptal gave us access to the best designers out there, saving us a lot of time and allowing us to build the best possible product.
Thierry JakircevicGeneral Manager, Digital Solutions, Bridgestone

Toptal’s talent is really excellent. They are able to work through large business problems and code incredibly efficiently.
Emily LemonSenior Director, Cleveland Cavaliers

The kind of people we looked for were hard to find. Toptal helped us achieve our goals by bringing high quality resources to bear on very short notice.
Elmar PlatzerDigital Transformation Leader, CSR

If you’ve tried working with other vendors, Toptal is going to be a different type of company to work with; they’re going to meet you where your needs are.
Matthew SchumacherSenior Product Manager, Alpha - Precision Drilling
Top Blockchain developers are in high demand. Ready to get started?