
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.
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
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Featured Talent

Imi Kim
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.

Julian Cislo
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.

Éric Lamontagne
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.

Luciano Greiner dos Santos
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.

Kartik Bajaj
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.

Jerome Sonnet
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.

Dan Field
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.

Warren Schwartz
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.

Jing Hong Chan
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.

Draltan Marin
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.

Radek Ostrowski
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.

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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
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