Hire the Top 3% of Web3 Developers in 48 Hours

Hire vetted Web3 developers, consultants, architects, experts, programmers, and developers on demand. Leading companies choose Web3.js freelancers from Toptal for their most important development projects.

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Featured Talent

Imi Kim, Freelance Web3.js Engineer.

Imi Kim

Verified Expert in Engineering
16 Years of Experience

Web3 Developer

Imi is a seasoned developer with over 30 years of experience leading and implementing systems to solve complex business problems. He has solid expertise in blockchains, mathematical and back-end coding, machine learning, trading, and systems design. Imi can help create a highly efficient version of whatever system a client is working on.

Web3.jsC#
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Julian Cislo, Web3.js Coder.

Julian Cislo

Verified Expert in Engineering
5 Years of Experience

Web3 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.

Web3.jsWindows DevelopmentTypeScriptSolidityJavaScriptEthereum Smart ContractBlockchainReact.jsEthereumDecentralized Finance (DeFi)Node.jsNFTPython
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Éric Lamontagne, Senior Web3.js Programmer and Consultant.

Éric Lamontagne

Verified Expert in Engineering
25 Years of Experience

Web3 Developer

Éric has 23 years of software development experience since obtaining his bachelor's degree in software engineering. He has created a software development consultancy, founded a startup, and published mobile apps in Apple's App Store. He is certified in blockchain and is a Microsoft Certified Solution Developer (MCSD). Éric has worked with organizations of all sizes, from successful startups to corporations in the transportation, media, energy, aeronautics, insurance, and financial sectors.

Web3.jsJavaScriptGitSoftware DevelopmentWeb Development
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Luciano Greiner dos Santos, Freelance Web3.js Programmer for Hire.

Luciano Greiner dos Santos

Verified Expert in Engineering
18 Years of Experience

Web3 Developer

Luciano is a seasoned professional with a decade and a half of experience developing Java enterprise applications. Currently, he's focused on big-data technologies such as Spark, Cassandra, Kafka, and Elasticsearch. He's capable of working as a full-stack engineer, having also worked with JavaScript and AngularJS in the past. Luciano is also fluent in English, has a native level in Portuguese, and has basic Spanish speaking abilities.

Web3.jsKubernetesDockerAWSJSONElasticsearchBig Data ArchitecturePythonEnterprise DevelopmentAngularJSSpringHTML5Web Development
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Kartik Bajaj, Freelance Web3.js Developer for Hire.

Kartik Bajaj

Verified Expert in Engineering
10 Years of Experience

Web3 Developer

Kartik is a seasoned engineering leader with a strong technical foundation and experience across high-growth startups and established tech companies. As his most recent position as Co-Founder & VP of Engineering at WonderFi, he was responsible for driving product engineering, development strategy, and scaling engineering operations to support the company’s ambitions in the fintech / Web3 space.

Web3.jsNode.jsBlockchainSolidityReact.jsAPIJavaScriptArtificial Intelligence
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Jerome Sonnet, Freelance Web3.js Programmer for Hire.

Jerome Sonnet

Verified Expert in Engineering
24 Years of Experience

Web3 Developer

With 20+ years in finance, risk management, and IT, Jerome specializes in Odoo ERP architecture and project execution. He excels at designing and implementing scalable solutions and optimizing business processes with Agile development and cloud integration. He has led end-to-end Odoo deployments, engaged regulators, recruited strategic partners, and driven stakeholder alignment. As a full-stack IT engineer, Jerome ensures robust, efficient ERP systems that enhance operational performance.

Web3.jsPythonOdooFull-stackTypeScriptReact.jsWeb DevelopmentDecentralized Finance (DeFi)Software Architecture
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Dan Field, Expert Web3.js Programmer for Hire.

Dan Field

Verified Expert in Engineering
18 Years of Experience

Web3 Developer

Dan is a software engineer and architect with almost three decades of experience in startups spanning consumer tech, web, eCommerce, mobile, Internet of things (IoT), Internet service providers (ISPs), telco, and blockchain industries. He is an innovator and technical lead with the ability to work across multiple industries, technologies, and levels. With solid experience developing new technologies, Dan can quickly climatize to new projects.

Web3.jsSolidityTypeScriptNode.jsReact.jsSQLPostgreSQLRustBig Data ArchitectureDatabaseCloud EngineeringRedisMySQL
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Warren Schwartz, Web3.js Freelancer.

Warren Schwartz

Verified Expert in Engineering
16 Years of Experience

Web3 Developer

Warren has been in software development for the last 20 years, and he has delivered hundreds of successful projects. In the previous four years as a CTO, he has proudly led a team of five developers to produce some great apps using blockchain and conventional tech.

Web3.jsC#SolidityEthereumEthereum Smart ContractTypeScriptBlockchainJavaScriptNFT
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Jing Hong Chan, Accomplished Web3.js Freelancer.

Jing Hong Chan

Verified Expert in Engineering
7 Years of Experience

Web3 Developer

Jing is a front-end developer with five years of professional experience specializing in React and React Native. He's attentive to detail and excels at building creative interfaces and interactions. Jing is obsessed with crafting pixel-perfect front-end experiences and getting a perfect lighthouse score. He believes that being a great developer balances beauty with practicality, and he writes code that future developers can easily work with.

Web3.jsReact.jsMacOSJavaScriptTypeScriptFront EndVisual Studio DevelopmentBlockchain
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Draltan Marin, Freelance Web3.js Developer for Hire.

Draltan Marin

Verified Expert in Engineering
12 Years of Experience

Web3 Developer

Draltan has been working in software development on a wide variety of technologies for more than 10 years. Over the past three years, I co-founded a startup and participated in a few startup projects as CTO. This year, I've been heavily working on blockchain projects defining technical architectures and developing contracts.

Web3.jsReduxReact.jsExpress.jsNode.js
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Radek Ostrowski, Web3.js Coder.

Radek Ostrowski

Verified Expert in Engineering
18 Years of Experience

Web3 Developer

Radek is a certified Toptal blockchain engineer, particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data and machine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co-creator of PlayStation 4's back end, successful hackathon competitor, and speaker at conferences in Australia, Poland, and Serbia.

Web3.jsGitAndroidSolidityBlockchainEthereum Smart ContractEthereumMachine LearningAgile DevelopmentSparkDockerBig Data ArchitectureScala
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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.

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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.

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