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.

Meet Blockchain Developers in our Exclusive Network

Featured Talent

Gheis Mohammadi, Accomplished Blockchain Freelancer.

Gheis Mohammadi

Verified Expert in Engineering
13 Years of Experience

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.

BlockchainNode.jsGolangSolidityEthereumC++Back-end DevelopersWeb3.jsNoSQLSQLDecentralized Finance (DeFi)
Hire Gheis
Robert Pardela, Blockchain Engineer.

Robert Pardela

Verified Expert in Engineering
25 Years of Experience

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.

BlockchainXamarinJavaScriptSolidityNode.jsREST APISoftware DevelopmentEthereumEthereum Smart ContractSoftware ArchitectureWeb DevelopmentBack-end DevelopersFront End
Hire Robert
Alisson Reinaldo Silva, Accomplished Blockchain Freelancer.

Alisson Reinaldo Silva

Verified Expert in Engineering
12 Years of Experience

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.

BlockchainNode.jsJavaScriptC#React.jsAngularMongoDBTypeScriptAWS LambdaAmazon S3AWSAWS RDSDocker
Hire Alisson
Sven Meyer, Blockchain Coder.

Sven Meyer

Verified Expert in Engineering
7 Years of Experience

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.

BlockchainEthereumEthereum Smart ContractSolidityEmbedded Software EngineeringNFTSoftware Architecture
Hire Sven
Daniel Trinh, Senior Blockchain Programmer and Consultant.

Daniel Trinh

Verified Expert in Engineering
5 Years of Experience

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.

BlockchainSolidityCSSAWSEthereum Smart ContractEthereumNFT
Hire Daniel
Julian Cislo, Blockchain Coder.

Julian Cislo

Verified Expert in Engineering
5 Years of Experience

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.

BlockchainWindows DevelopmentTypeScriptSolidityJavaScriptEthereum Smart ContractWeb3.jsReact.jsEthereumDecentralized Finance (DeFi)Node.jsNFTPython
Hire Julian
Ken Miyachi, Blockchain Engineer.

Ken Miyachi

Verified Expert in Engineering
6 Years of Experience

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.

BlockchainPythonSolidityAWSEthereumEthereum Smart Contract
Hire Ken
John R. Kosinski, Blockchain Coder.

John R. Kosinski

Verified Expert in Engineering
17 Years of Experience

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.

BlockchainEthereum Smart ContractSolidityC#Agile DevelopmentJavaScriptJSONC++Microsoft DevelopmentNode.jsEthereumDedicated Magento DevelopmentSoftware Development
Hire John
Kaustav Chakraborty, Blockchain Freelancer.

Kaustav Chakraborty

Verified Expert in Engineering
23 Years of Experience

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.

BlockchainJavaSpring BootEthereumApache KafkaSpringMicroservices DevelopmentNode.jsSolidityDatabaseFintech DevelopmentCI/CDGraphQL
Hire Kaustav
Harish Gupta, Toptal Blockchain Developer.

Harish Gupta

Verified Expert in Engineering
17 Years of Experience

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.

BlockchainNode.js
Hire Harish
David Braun, Expert Blockchain Programmer for Hire.

David Braun

Verified Expert in Engineering
33 Years of Experience

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.

BlockchainPythonJavaScriptNode.jsAgile DevelopmentGitHubGit
Hire David
Discover More Blockchain Developers in the Toptal Network
Start Hiring

Hiring Made Easy

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert specializing in the area you’re hiring in.
2

Choose your talent

Get a shortlist of expertly matched Blockchain developers within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Get up to two weeks to work with and assess your chosen developer and pay only if you decide to hire them.
Hire a Top Blockchain Developer Now

Toptal Lets You Hire Fast,
With Unparalleled Success

Trusted Experts Only

Trusted Experts Only

All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

Your New Team Member

Your New Team Member

We are so sure you will love your new team member that you can try working with them for a few days. Pay only if satisfied.

Scale as Needed

Scale as Needed

Hire talent within 48 hours. Scale your team up or down exactly when you need it, no strings attached.

Seamless Hiring

Seamless Hiring

We handle all aspects of billing, payments and NDAs. Let us take care of the overhead while you focus on building great products.

Flexible Engagements

Flexible Engagements

Choose the engagement type that suits your needs – hourly, part-time, or full-time – with the ability to change anytime.

Expert Talent Matcher

Expert Talent Matcher

Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Our Developer Screening Process

26.4%Pass Rate

Excellent technical communication

Toptal developers must possess strong written and verbal communication skills. They work effectively across multiple collaboration tools and convey complex engineering ideas and concepts with ease.

7.4%Pass Rate

Core skills and algorithms

Each developer is required to demonstrate their computer science fundamentals, problem-solving ability, and technical aptitude to a panel of leading experts.

3.6%Pass Rate

Proactive problem-solving

Toptal developers are skilled at tackling roadblocks creatively and independently. Each candidate is live-screened by two top developers where they have to offer multiple paths to the solution and make decisions on the spot.

3.2%Pass Rate

End-to-End project execution

Our developers deliver a test project to completion, demonstrating their skills across ideating, scoping, implementation, and problem-solving.

3%Pass Rate

Continued excellence

Toptal developers are expected to maintain a perfect track record while working with clients. We assess our talent after every engagement to ensure our standards for excellence were met.

Try Talent Before You Hire

We have a 98% trial-to-hire success rate.

Up to two weeks to try talent and evaluate if they’re the right fit

No obligation to pay or hire at the end of the two weeks

Get an alternative candidate quickly if you’re not satisfied

See Why Clients Love Our Exceptional Service

140+

Countries Served

30,000+

Clients Served

Our customers say Excellent4.7 out of 5 based on 2,047 reviewsTrustpilot logo

Showing our favorite reviews

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?

Hire a Top Blockchain Developer Now